New Xbox 360 Spring Update [ 2011 ]
I will answer questions 24/7 on this video READ
Nothing really change beside the color of the market place and a new glitch came out. Some cd's is not going to read on some consoles and xbox is also ready to send you a new console if this glitch happens to your xbox.
~ Source IGN
UPDATE
The update is really here to ban or check and stop fake, pirated, bootleg, and modded xbox's i dont know how microsoft is going to "Scan" your consoles but if you have a modded xbox [ which i dont know how there frimware works ] i will suggest for you, not to connect to the internet... But also if you didnt get the update dont go all crazy because the update is going from state to state.
New Xbox 360 Spring Update [ 2011 ]