Eric Lempel, Director of Playstation Network Operations just posted this little bit of information on the Official Playstation Blog. It looks like a very minor Playstation 3 update.

Hello, I just wanted to provide everyone with a head’s up that the next PLAYSTATION 3 system software update (v.2.76) will be coming soon. This is a minor update that improves the playback quality of some PS3 format software.