The beta release is out of the ordinary, typically we would see iOS 8.2 released publicly before iOS 8.3 makes a beta appearance. However, developers now have access to both iOS 8.2 beta 5 and iOS 8.3 beta through the dev center.
At this point, we still don't know what's new in iOS 8.3. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.
If you spot any new features, please let us know in the comments!