You could also look at it this way. Capcom has announced 6 games recently.
360/PS3 announced games:
Bionic Commando
Dark Void
Commando 3
Wii announced games:
Okami Wii
Monster Hunter 3
Unknown:
Street Fighter IV
So in the last 3 weeks they have announced 6 games. 2 of which are on the Wii and 3 of which are on the PS3 and Xbox 360. One is unknown. Sales wise, Street Fighter is the biggest franchise on there followed by Monster Hunter, so I would say the support isn't too bad.
Also, IGN did in fact just assume it's Xbox 360/PS3. This is the actual quote from them on the SFIV Xbox 360 page "This game has been confirmed as a project in development at Capcom, but official platform plans have not yet been confirmed -- plans may include an arcade release as well as release on next-generation gaming platforms. Street Fighter IV may or may not be released on this specific system. Please check back for a status update on this title."
My guess is they'll release a version of SFIV on all systems. There is no reason not to. Let's face it, they are just going to do what they did with SFIII and copy/paste the same game engine and add a couple characters for a $60 pricetag.










