diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b93e7a6..a97931b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
 # Changelog
 
-## 1.8.2 (unreleased)
+## 1.9.0 (unreleased)
 
+- Sync options: `newClientImplementation` is now the default.
 - Make `androidx.sqlite:sqlite-bundled` an API dependency of `:core` to avoid toolchain warnings.
 
 ## 1.8.1
diff --git a/common/src/androidMain/kotlin/com/powersync/ConnectionFactory.android.kt b/common/src/androidMain/kotlin/com/powersync/ConnectionFactory.android.kt
index 2c35a546..1039bc32 100644
--- a/common/src/androidMain/kotlin/com/powersync/ConnectionFactory.android.kt
+++ b/common/src/androidMain/kotlin/com/powersync/ConnectionFactory.android.kt
@@ -1,5 +1,4 @@
 package com.powersync
 
-@ExperimentalPowerSyncAPI
 @Throws(PowerSyncException::class)
 public actual fun resolvePowerSyncLoadableExtensionPath(): String? = "libpowersync.so"
diff --git a/common/src/appleNonWatchOsMain/kotlin/com/powersync/DatabaseDriverFactory.appleNonWatchOs.kt b/common/src/appleNonWatchOsMain/kotlin/com/powersync/DatabaseDriverFactory.appleNonWatchOs.kt
index 53cc0039..1dbed111 100644
--- a/common/src/appleNonWatchOsMain/kotlin/com/powersync/DatabaseDriverFactory.appleNonWatchOs.kt
+++ b/common/src/appleNonWatchOsMain/kotlin/com/powersync/DatabaseDriverFactory.appleNonWatchOs.kt
@@ -1,5 +1,4 @@
 package com.powersync
 
-@ExperimentalPowerSyncAPI
 @Throws(PowerSyncException::class)
 public actual fun resolvePowerSyncLoadableExtensionPath(): String? = powerSyncExtensionPath
diff --git a/common/src/commonMain/kotlin/com/powersync/ConnectionFactory.kt b/common/src/commonMain/kotlin/com/powersync/ConnectionFactory.kt
index 1a8119dc..5fd2fa1d 100644
--- a/common/src/commonMain/kotlin/com/powersync/ConnectionFactory.kt
+++ b/common/src/commonMain/kotlin/com/powersync/ConnectionFactory.kt
@@ -59,7 +59,6 @@ public open class DriverBasedInMemoryFactory<D : SQLiteDriver>(
  * configuring external database connections not managed by PowerSync to work with the PowerSync
  * SDK.
  */
-@ExperimentalPowerSyncAPI
 @Throws(PowerSyncException::class)
 public expect fun resolvePowerSyncLoadableExtensionPath(): String?
 
diff --git a/common/src/commonMain/kotlin/com/powersync/PowerSyncDatabase.kt b/common/src/commonMain/kotlin/com/powersync/PowerSyncDatabase.kt
index dc01ec67..42271ebe 100644
--- a/common/src/commonMain/kotlin/com/powersync/PowerSyncDatabase.kt
+++ b/common/src/commonMain/kotlin/com/powersync/PowerSyncDatabase.kt
@@ -105,7 +105,7 @@ public interface PowerSyncDatabase : Queries {
         crudThrottleMs: Long = 1000L,
         retryDelayMs: Long = 5000L,
         params: Map<String, JsonParam?> = emptyMap(),
-        options: SyncOptions = SyncOptions.defaults,
+        options: SyncOptions = SyncOptions(),
     )
 
     /**
@@ -246,7 +246,6 @@ public interface PowerSyncDatabase : Queries {
          * identifier, and uses internal locks to ensure these two databases are not synced at the
          * same time (which would be inefficient and can cause consistency issues).
          */
-        @ExperimentalPowerSyncAPI
         public fun opened(
             pool: SQLiteConnectionPool,
             scope: CoroutineScope,
@@ -264,7 +263,6 @@ public interface PowerSyncDatabase : Queries {
          *
          * This can be useful for writing tests relying on PowerSync databases.
          */
-        @ExperimentalPowerSyncAPI
         public fun openInMemory(
             factory: InMemoryConnectionFactory,
             schema: Schema,
@@ -285,7 +283,6 @@ public interface PowerSyncDatabase : Queries {
             )
         }
 
-        @ExperimentalPowerSyncAPI
         internal fun openedWithGroup(
             pool: SQLiteConnectionPool,
             scope: CoroutineScope,
diff --git a/common/src/commonMain/kotlin/com/powersync/db/PowerSyncDatabaseImpl.kt b/common/src/commonMain/kotlin/com/powersync/db/PowerSyncDatabaseImpl.kt
index 1141c127..bf23a5af 100644
--- a/common/src/commonMain/kotlin/com/powersync/db/PowerSyncDatabaseImpl.kt
+++ b/common/src/commonMain/kotlin/com/powersync/db/PowerSyncDatabaseImpl.kt
@@ -326,7 +326,6 @@ internal class PowerSyncDatabaseImpl(
         return powerSyncVersion
     }
 
-    @ExperimentalPowerSyncAPI
     override suspend fun <T> useConnection(
         readOnly: Boolean,
         block: suspend (SQLiteConnectionLease) -> T,
diff --git a/common/src/commonMain/kotlin/com/powersync/db/Queries.kt b/common/src/commonMain/kotlin/com/powersync/db/Queries.kt
index 90e955f5..3534fb77 100644
--- a/common/src/commonMain/kotlin/com/powersync/db/Queries.kt
+++ b/common/src/commonMain/kotlin/com/powersync/db/Queries.kt
@@ -196,8 +196,7 @@ public interface Queries {
      * connection with a `BEGIN` statement or forgetting to close it, can disrupt the rest of the
      * PowerSync SDK. For this reason, this method should only be used if absolutely necessary.
      */
-    @ExperimentalPowerSyncAPI()
-    @HiddenFromObjC()
+    @HiddenFromObjC
     public suspend fun <T> useConnection(
         readOnly: Boolean = false,
         block: suspend (SQLiteConnectionLease) -> T,
diff --git a/common/src/commonMain/kotlin/com/powersync/db/driver/SQLiteConnectionPool.kt b/common/src/commonMain/kotlin/com/powersync/db/driver/SQLiteConnectionPool.kt
index ceff6577..e5066224 100644
--- a/common/src/commonMain/kotlin/com/powersync/db/driver/SQLiteConnectionPool.kt
+++ b/common/src/commonMain/kotlin/com/powersync/db/driver/SQLiteConnectionPool.kt
@@ -13,7 +13,6 @@ import kotlinx.coroutines.runBlocking
  * built on. The SDK provides its own pool, but can also use existing implementations (via
  * [com.powersync.PowerSyncDatabase.opened]).
  */
-@ExperimentalPowerSyncAPI()
 public interface SQLiteConnectionPool {
     /**
      * Calls the callback with a read-only connection temporarily leased from the pool.
@@ -49,7 +48,6 @@ public interface SQLiteConnectionPool {
     public suspend fun close()
 }
 
-@ExperimentalPowerSyncAPI
 public interface SQLiteConnectionLease {
     /**
      * Queries the autocommit state on the connection.
diff --git a/common/src/commonMain/kotlin/com/powersync/sync/SyncOptions.kt b/common/src/commonMain/kotlin/com/powersync/sync/SyncOptions.kt
index 30902d3d..3cad9022 100644
--- a/common/src/commonMain/kotlin/com/powersync/sync/SyncOptions.kt
+++ b/common/src/commonMain/kotlin/com/powersync/sync/SyncOptions.kt
@@ -11,7 +11,6 @@ import kotlin.native.HiddenFromObjC
  * Configuration options for the [PowerSyncDatabase.connect] method, allowing customization of
  * the HTTP client used to connect to the PowerSync service.
  */
-@OptIn(ExperimentalObjCRefinement::class)
 public sealed class SyncClientConfiguration {
     /**
      * Extends the default Ktor [HttpClient] configuration with the provided block.
@@ -29,48 +28,42 @@ public sealed class SyncClientConfiguration {
      * this method when instantiating the client. The PowerSync SDK does not modify the provided client.
      */
     @HiddenFromObjC
-    @ExperimentalPowerSyncAPI
     public class ExistingClient(
         public val client: HttpClient,
     ) : SyncClientConfiguration()
 }
 
 /**
- * Experimental options that can be passed to [PowerSyncDatabase.connect] to specify an experimental
- * connection mechanism.
- *
- * The new connection implementation is more efficient and we expect it to become the default in
- * the future. At the moment, the implementation is not covered by the stability guarantees we offer
- * for the rest of the SDK though.
+ * Options for [PowerSyncDatabase.connect] to customize the connection mechanism.
  */
-public class SyncOptions
-    @ExperimentalPowerSyncAPI
-    constructor(
-        @property:ExperimentalPowerSyncAPI
-        public val newClientImplementation: Boolean = false,
-        /**
-         * The user agent to use for requests made to the PowerSync service.
-         */
-        public val userAgent: String = userAgent(),
-        @property:ExperimentalPowerSyncAPI
-        /**
-         * Allows configuring the [HttpClient] used for connecting to the PowerSync service.
-         */
-        public val clientConfiguration: SyncClientConfiguration? = null,
+public class SyncOptions(
+    /**
+     * Enables the new client implementation written in Rust.
+     *
+     * The new implementation is more efficient and enabled by default. It can be disabled if compatibility issues occur.
+     * The old implementation will be removed in a future version of the PowerSync SDK.
+     * Please report any issues experienced with the new implementation.
+     */
+    public val newClientImplementation: Boolean = true,
+    /**
+     * The user agent to use for requests made to the PowerSync service.
+     */
+    public val userAgent: String = userAgent(),
+    /**
+     * Allows configuring the [HttpClient] used for connecting to the PowerSync service.
+     */
+    public val clientConfiguration: SyncClientConfiguration? = null,
+    /**
+     * Whether streams that have been defined with `auto_subscribe: true` should be synced even
+     * when they don't have an explicit subscription.
+     */
+    public val includeDefaultStreams: Boolean = true,
+) {
+    public companion object {
         /**
-         * Whether streams that have been defined with `auto_subscribe: true` should be synced even
-         * when they don't have an explicit subscription.
+         * The default sync options, which are safe and stable to use.
          */
-        public val includeDefaultStreams: Boolean = true,
-    ) {
-        public companion object {
-            /**
-             * The default sync options, which are safe and stable to use.
-             *
-             * Constructing non-standard sync options requires an opt-in to experimental PowerSync
-             * APIs, and those might change in the future.
-             */
-            @OptIn(ExperimentalPowerSyncAPI::class)
-            public val defaults: SyncOptions = SyncOptions()
-        }
+        @Deprecated("Customizing sync options is no longer necessary, use constructor instead", replaceWith = ReplaceWith("SyncOptions()"))
+        public val defaults: SyncOptions = SyncOptions()
     }
+}
diff --git a/common/src/jvmMain/kotlin/com/powersync/ConnectionFactory.jvm.kt b/common/src/jvmMain/kotlin/com/powersync/ConnectionFactory.jvm.kt
index 2ecb6741..e6f91923 100644
--- a/common/src/jvmMain/kotlin/com/powersync/ConnectionFactory.jvm.kt
+++ b/common/src/jvmMain/kotlin/com/powersync/ConnectionFactory.jvm.kt
@@ -2,7 +2,6 @@ package com.powersync
 
 import com.powersync.db.runWrapped
 
-@ExperimentalPowerSyncAPI
 @Throws(PowerSyncException::class)
 public actual fun resolvePowerSyncLoadableExtensionPath(): String? = runWrapped { powersyncExtension }
 
diff --git a/common/src/watchosMain/kotlin/com/powersync/ConnectionFactory.watchos.kt b/common/src/watchosMain/kotlin/com/powersync/ConnectionFactory.watchos.kt
index 5758700f..de64b198 100644
--- a/common/src/watchosMain/kotlin/com/powersync/ConnectionFactory.watchos.kt
+++ b/common/src/watchosMain/kotlin/com/powersync/ConnectionFactory.watchos.kt
@@ -17,7 +17,6 @@ private val didLoadExtension by lazy {
     true
 }
 
-@ExperimentalPowerSyncAPI
 @Throws(PowerSyncException::class)
 public actual fun resolvePowerSyncLoadableExtensionPath(): String? {
     didLoadExtension