Hi everybody,
oC 2.15 for Android is finally here! 
Login Rearquitecture
One of the most important changes we introduced in 2.15 is login rearquitecture. We have applied several changes in Basic and OAuth authentication methods. During this process we have fixed some issues regarding OAuth token renewal.
OpenId Connect Implementation
Related with previous one, ownCloud App will support OpenId Connect (OIDC) from now on. You can check its official documentation if you want to learn more about OIDC.
Biometrical lock
From now on, thanks to a Roberto contribution, oC app will use the native biometrical lock. And what that means? You can keep using your fingerprint to authenticate yourself, but also you will be able to use additional biometrics credentials (if your phone supports them).
Usernames with ‘+’ are now supported
Usernames with ‘+’ were included in oC server 10.4.1 and weren’t supported in android App. They will be supported from now on.
New bottom navigation bar
And last but no least, we have the most visual change in 2.15, which is the new bottom navigation bar.
As you know, we introduced shortcuts for Av.Offline files in 2.11, and Shared by link in 2.14. In 2.15 we have moved the main menu from drawer to a bottom navigation bar. So it will be easier for you to access your available offline and shared by link files.
This is just the beggining of an app redesign, so stay tunned for new updates 
End of support for Android KitKat OS
As it was announced in release 2.14, Android KitKat will not be supported anymore in ownCloud App. The new minimum version supported will be Android 5.0 Lollipop.
End of support for older than oc10 servers
Same for ownCloud servers, older than 10 servers will be no longer supported. The new minimum version supported will be ownCloud 10.
Bugs fixing
Aditionally we have included some fixes reported by the app users, so thank you for reporting them:
- Fix OAuth token renewal after being revoked.
- Fix crashes related with move and copy operations.
- Fix an ANR related with documents provider.
- Fix ocasional crash when opening share by link.
- Fix navigation loop in shared by link and Av. Offline options.
Read the whole Changelog in here.
How can I download the new ownCloud Android app?
How can I send my feedback to ownCloud developers?
We really appreciate your feedback to improve the ownCloud Android app so if you find any bug or want to make any suggestion, please participate in one of these channels:
– Open a new issue on Github: https://github.com/owncloud/android/issues/
– Open a new topic on central: https://central.owncloud.org/
– Write to android-app@owncloud.com