If you loaded up any unofficial builds of CM10 on your phone yet, you may have noticed that when it first boots it still has Cid and the CM9 logo plastered on it. The CyanogenMod team is moving towards complete CM10 development and therefore wanted to update the boot animation to reflect this.
The animation is definitely slimmed down and simplified over the CyanogenMod animations that we have seen in earlier versions. Boring for some, but the animation does look more professional and almost ready for primetime. The code is still waiting to be signed off on by the team before being implemented. What do you think?