This update has added minis to the ps3 & Transferable data from one ps3 to another.

More information can be found here:
http://blog.eu.playstation.com/2009/12/08/ps3-system-software-update-3-15/

cool, cheers mate i was wondering what new it brought

That was the previous update that brought minis the ps3 huh!

Yeah, PS3 has had minis for a while, so what's new with this update?

Apparantly its the old update but its now mandatory, previously you had the option to not install the update

This has made no changes to my PS3. fail update is fail

It's just a small update nothing major