AP25 Information:

Anti-Piracy 2.5, simply known as AP25, is a added security layer on retail games.
When you boot the game AP25 requests the Drive to check the new security layer.
The Drive will need to answer the AP25 checks.
If your running a Back Up, the DVD will fail to read and give you DVD Read Error.
If your running a Retail, the game will pass and load up like normal.
Flashed DVD Drives will need new firmware to falsely answer the AP25 checks.

The current LT Firmware already has coding to falsely report ssv2.
The new Firmware (LT+) will need new coding to falsely report ssv3.

Current known Games with AP25:
Fable 3
Assassin's Creed: Brotherhood

Will I get banned if I play those games Online without the New Firmware?
Yes, a few modding community members have been banned for playing Fable 3.