DropBox has a third build of Dropbox for Blackberry, and they have opened up some more slots for new testers. I do not know if any slots are still open/available so feel free to check by using the link below.
If you do not have a DropBox account you can get signed up by going to https://www.dropbox.com/
Here’s what’s changed since last week:
– Support for all devices running 4.5 and above (audio and video supported in OS 4.6 and above only)
– Back-button from main screen hides app
– Fixes around opening files in external viewers (xls, etc)
– Support for open-edit-upload scenario for external viewers (e.g., docs2go)