TwitterBerry has recently been updated to version 0.8. The latest version appears to just be an interface update on the post screen according to the new features list.
You can download TwitterBerry 0.8 OTA by pointing your devices BlackBerry Broswer to http://orangatame.com/ota/twitterberry/
[Source]
We follow several new web20 services. Twitter is great. Voike at http://www.voike.com is an interesting tool that goes beyond Twitter with a voice and social networking mashup