The wide receiver announced on Twitter about an hour ago that he has been released...
http://twitter.com/#!/OfficialBraylon/status/151678949854945281
Another tweet links to this statement:
I was released today by the 49ers due to my injury that required more time to rehab and hasn’t allowed me to re-sync with the offense. I wish the 49ers organization the best of luck during the Playoffs. I will be working hard this off season to strengthen my knee and prepare for the 2012 season. Thanks for your continued support and for being such loyal fans.
The Chronicle reports the 49ers have confirmed the move.