Heres the link to this 360/PS3 gaming heaven.

http://www.gamersyde.com/news_6251_en.html

Looks good.  Hopefully a few of those screens toward the end were in-game footage and not just cinematic footage.

Pretty much confirms it's either PS3 only or PS3/Xbox360.

How so?

It's actually interesting as to why they haven't announced a platform yet.

Probably thinks the screens are too pretty for Wii, which is debatable. I think the most telling piece of evidence is that the game is going to be promoted using the PSP game they just put out, which is a strong case for the game remaining on PS3, though what it's on beyond the PS3 is impossible to tell.

The screens look too good to be for our little Wiis ( Hmmmm )...

Is there a particular part that looks beyond the Wii's capabilities?

I don't see enough those screenshots to make that call yet, maybe there's something you can point out that I am not seeing.  ^_^ 

Third page, most screens look in-game to me... And they are well beyond Wii capabilities IMO.