Looks like BG has some pictures posted of it, and why reinvent the wheel? BlackBerry Google Talk and Yahoo IM 2.0 | The Boy Genius Report
I've downloaded it and it's great! I highly recommend any users of google talk currently to upgrade and enjoy the new feature set. Buddy icons are available as well as emoticons. Stays connected much better now as well.
Download it OTA from: http://www.blackberry.com/GoogleTalk