Remind me again why Modern Warfare 2 is supposed to be a day one purchase?

[A Bad Clown]

Updated Graphics-look at gameplay videos
Numerous new weapons and perks-Nukes, planes, and dual weilding anyone?
New attackments and equipment: Throwing knives and thermal vision with a heartbeat sensor FTW
New maps-Including an Airport, a wrecked City, and an Office Building
New Campaign and Co-Op-Who likes them snowmobiles and smashing Rio?
Multiplayer- Hundreds of thousands will be playing

There's gonna be alot of stuff to keep people playing for a while.