Version 2.11.520 will now label your photos with the sender. It will also allow you specify the location you want to send, handy for when you want to pretend you are at work when you are in the pub. You can now also see how many people are in a group, and archive group sessions.
Lastly the app has an improved picture viewer and features the usual performance improvements.
Hopefully we will not have to wait ages again for the beta release to hit handset.