Twitter for BlackBerry will receive an update that will bring integration with BBM. Twitter for BlackBerry is not the first Twitter client to get BBM integration, TweetCaster also has the integration.
There is no official release date, but a beta version is expected soon.
With Twitter for BlackBerry being connected to BBM, users can share tweets to other BBM users and in groups. In this new update, users can also do auto BBM personal message updates using Twitter for BlackBerry. This will be a huge step in social sharing as Twitter for BlackBerry is one of the top Twitter apps for BlackBerry. Be on the lookout for an update coming soon.
There is no official release date, but a beta version is expected soon.