Updated available versions.

Author: freakboy3742

README.rst

@@ -8,25 +8,38 @@ It works by downloading, patching, and building a fat binary of Python and
 selected pre-requisites, and packaging them as static libraries that can be
 included in an Xcode project.
 
-The binaries support the ``$(ARCHS_STANDARD)`` set - that is, x86_64 for
-macOS,  armv7 and arm64 for iOS devices, arm64 for AppleTV devices, and armv7k
-for watchOS. This should enable the code to run on:
+The binaries support x86_64 for macOS; arm64 for iOS and appleTV devices;
+and armv7k for watchOS. This should enable the code to run on:
 
 * MacBook
 * iMac
 * Mac Pro
-* iPhone (4s or later)
-* iPad
-* iPod Touch (4th gen or later)
+* iPhone (5s or later)
+* iPad (5th gen or later)
+* iPad Air (all models)
+* iPad Mini (2 or later)
+* iPad Pro (all models)
+* iPod Touch (6th gen or later)
 * Apple TV (4th gen or later)
 * Apple Watch
 
 The master branch of this repository has no content; there is an
 independent branch for each supported version of Python. The following
 Python versions are supported:
 
-* `Python 2.7 <https://github.com/pybee/Python-Apple-support/tree/2.7>`__
-* `Python 3.4 <https://github.com/pybee/Python-Apple-support/tree/3.4>`__
 * `Python 3.5 <https://github.com/pybee/Python-Apple-support/tree/3.5>`__
 * `Python 3.6 <https://github.com/pybee/Python-Apple-support/tree/3.6>`__
-.. * `Python 3.7 <https://github.com/pybee/Python-Apple-support/tree/3.7>`__
+* `Python 3.7 <https://github.com/pybee/Python-Apple-support/tree/3.7>`__
+* `Python 3.8 <https://github.com/pybee/Python-Apple-support/tree/3.8>`__
+
+Suggestions for changes should be made against the `dev branch
+<https://github.com/beeware/Python-Apple-support/tree/dev>`__; these
+will then be backported into the supported Python releases. The dev branch will
+track the most recent supported version of Python (currently, Python 3.8).
+
+See the individual branches for usage instructions.
+
+The following versions were supported in the past, but are no longer
+maintained:
+* `Python 2.7 <https://github.com/pybee/Python-Apple-support/tree/2.7>`__ (EOL January 2020)
+* `Python 3.4 <https://github.com/pybee/Python-Apple-support/tree/3.4>`__ (EOL March 2019)