Sony's Network Entertainment VP Eric Lempel has stated that this is indeed a minor PSP system software update.
As always, those utilizing any of the the recent PSP downgraders and hacks will want to avoid updating your console if you wish to run PSP homebrew on it as the recent PlayStation Portable exploits are likely patched.
152w ago - Approximately two months passed since the last PlayStation Portable Firmware update, and today Sony's VP of Network Operations Americas Eric Lempel has announced that PSP System Software update version 6.37 is incoming.
210w ago - Today SCEE PlayStation Network Product Manager James Thorpe has confirmed rumors that PSP Minis are soon coming to the PS3 console, via PlayStation 3 Firmware update 3.15!
To quote: The next system software update for PS3 will be available very soon. Update 3.15 is an optional update and has two key features which are explained below -
'PSP Minis' come to PS3:
We launched minis for PSP back in October but from the 17th December you will be able to enjoy these bite size games on your PS3 as well as your PSP. This firmware update allows the minis emulator to work on PS3 and we are working on getting the majority of the current minis ready for the PS3 from the 17th December.
If you buy a minis game from the 17th it will work on both platforms so if you have a PS3 and a PSP you will only need to buy it once and it will be available to download to your PS3 and your PSP.
If you have already bought a mini for PSP and want to get it on your PS3 as well, just go to your download list in the Store and download it again for free. The game will then work on your PS3 as well. Simple!