An update released of BBM 5.0 to beta testers *only* was delayed last week but today it was released. The new version is 184.108.40.206, so far what I noticed is just improvements, bug fixes with a few new features.
*New send pictures/avatars to BBM groups
*Fixed smileys not showing up until it has been sent.
*Auto play and record voice notes
*Search for pictures in the search bar.
The beta testing was open to the general public who signed up to their new program the Beta Zone. You can still sign up for the Beta Zone but not for the BBM release. To sign up go to this LINK and maybe you get a chance to participate in future releases.