Twitter for BlackBerry goes to public beta

After a couple months of testing, RIM's official Twitter client for BlackBerry has just moved from a private, invite-only affair to a free public beta, adding a whole bunch of features in the process. The app's now got some comprehensive notification support for DMs, replies, and mentions, the ability to create and manage lists, on-device profile editing, magnified avatar viewing, and improved performance -- features that might stand a shot at catapulting the app toward the upper end of the Twitter echelon on the platform. RIM's being clear about the fact that this is still a beta we're dealing with here, but with public availability, we're at least a baby step closer to a final product.