http://www.gamesindustry.biz/articles/game-unable-to-fulfil-rock-band-pre-orders

Looks like the 360 might get a boost from this in eu after all(when will the other versions of rock band be available, ps3 ps2?).

dont they all come out at the same time?

 No, they don't. I'm sure Microsoft paid a bunch of money for that to happen.

Well I highly doubt Rockband which ALMOST costs the same as an Arcade 360 would be a Killer app..

It was for me :)

I don't think there is enough information to say how well it will do. Retailers might order fewer units since the boxes take up so much space.

You'd be surprised. When I go to Best Buy, I can easily scour the store and maybe find anywhere from 30-50 boxes stacked up. Obviously it may be different for a smaller store, but the stock is there nonetheless.

I don't think most stores are so big in Europe. They are not as small as Japan, but still on average much smaller.

edit:Nevermind

It won't be a "killer app", but it will have crazy long legs and will probably continue to sell steady for six months or longer. Look at the American chart... Rock Band for the 360 is still #12 overall six months after launch.

That's damned impressive.