Pre-emptive post to clear up misconceptions about this update.
- Avatars (the Mii-like things) are OPTIONAL. You can still use your Gamerpics. Microsoft will not have the system put a gun to your head and force you to use them, despite what some folks here seem to believe.
- Blade functionality will only be in the Guide menu. You will be using that Media Center-esque interface, and there's no going back.