Will there be a new version of the Android app? It's been without any update for a long time and it doesn't seem to be working really well.
On January 13 2020, Yaakov Ellis, a Stack Exchange staff member, stated in response to an app bug report that,
We are not providing any further support for the mobile apps. There will not be any more builds made for either the Android or the iOS app (even for breaking bugs). We encourage all mobile users to use the responsive website. We hope to continue to incrementally improve the user experience for mobile users.
The answer thus appears to be "no".