PS3 Firmware 3.15 out now
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Sony's released PS3 Firmware 3.15, as you'll see if you do a system update check.
This one adds a great LAN cable transfer feature between PS3s, so if you're moving from fat to thin your life is now 50,000% easier.
It also adds a Minis emulator to PS3: the diminutive PSP games will be available on its adolescent sibling as of December 17.
Full details here.