Research in Motion recently released Twitter for BlackBerry v2.1, new with multiple account support for up to five Twitter accounts, in BackBerryBeta Zone.

The new Multi-Account Support feature is designed to let you use up to five accounts on Twitter for BlackBerry smartphones. When logged into multiple accounts, the current user name will appear in the upper-left corner of the header bar and the user picture will appear in the My Profile icon. You can quickly switch between accounts by using the Switch Account function, accessible from My Profile or via the Menu. Have an interesting Tweet in one account that you’d like to share from another account? No problem, you can cross-post Tweets and Retweets from one account to another without switching the current account view. You can also stay notified of Mentions and Messages with near real-time notifications for each of your Twitter accounts.

[Via Inside BlackBerry]