Today, Sony has released an update to their official firmware, bringing the latest version to 3.65. The new release only brings minor new features regarding PSP games and minis. The update log also states, "System stability during use of some PS3 software has been improved." As always it is recommended that you stay on 3.55 or lower firmware if you enjoy having unrestricted control over your console.
Main features in system software update version 3.65
Saved Data Utility for PSP™ games
[Saved Data Utility (minis)] under [Game] has been changed to [Saved Data Utility (minis/PSP™)].
You can now back up saved data for PSP™ games by copying it to the PlayStation®3 Hard Disk Drive.
Other new or revised features in version 3.65
System stability during use of some PS3 software has been improved.
Main features in system software update version 3.65
Saved Data Utility for PSP™ games
[Saved Data Utility (minis)] under [Game] has been changed to [Saved Data Utility (minis/PSP™)].
You can now back up saved data for PSP™ games by copying it to the PlayStation®3 Hard Disk Drive.
Other new or revised features in version 3.65
System stability during use of some PS3 software has been improved.