I plan to start the alpha test of CC V5 near the end of this week (near 11/12 Feb). I suspect that some of you who are signed up to be alpha testers will want to forgo the privilege this time. It is also possible that some of non-testers might want to join.
The high points:
- CC V5 no longer supports Gingerbread or Honeycomb. The first supported Android version is 4 (Ice Cream Sandwich, API #14).
- From a functional point of view V5.0 doesn't change much. The major change is incorporation of Google's "Storage Access Framework", permitting you to store your library in arbitrary folders on an SD card. This works on Android 5 (Lollipop) or later. The existing "Kitkat" hack is now necessary only on Kitkat (Android 4.4).
- There are a very large number of "technical" changes. CC was completely revamped to use Google's new compatibility packages and tools, during which I touched almost everything. This is the main reason for the alpha test -- it is possible that there are places where I didn't make the right changes.
- Using the new libraries brings along some cosmetic changes. For example, the Settings screen now looks more "normal". Button placement in dialogs follows the "Material Design" guidelines. The action bar looks a bit different. The e-ink corrections seem to be less radical. After a week of using the alpha version I am still discovering these small changes. And no, these changes aren't optional.

I will send an email to the alpha group to remind you that you are subscribed. If you stay subscribed then you will be offered the alpha update when I release it. If you want out then let me know by PM.