Earlier this week Sony confirmed that PSP Firmware Update 6.31 adds recommendations for games and videos on the PlayStation Store.
In addition to this, PlayStation Portable Firmware Update version 6.31 improves system software stability during use of some PSP format software titles.
As always, further details and the official changelog will be added as soon as they are available.
PSP and PSPgo Firmware Update 6.31 Changelog:
• System software stability during use of some PSP format software titles has been improved.
+ [By Format] has been added to the options menu for [Group Content].
+ Games can now be grouped and displayed in folders based on format under [Game]. To sort games by format, select a game icon, and then press the square button.