Ice Cream Sandwich Interface following Design Guidelines
On Ice Cream Sandwich Google Talk looks much better now and i like the interface.
The Android Design Guidelines ( http://developer.android.com/design/ ) provide information on how an application should look like.
Here are some screenshots:
Google+ Messenger MUC: http://www.google.com/mobile/+/messenger.png
Google Talk: http://www.androidpolice.com/2011/10/26/getting-to-know-android-4-0-part-2-google-talk-gets-a-facelift/
I started changing some layouts etc. - though it is not ready. But feel free to contact me :)