Finally! a release date for the PC version of Street Fighter IV has been announced.
According to Shizowa san the Japanese pc version is coimin out on July 2nd and will be compatible with windows xp and vista (sorry no mac)
Both the US and EU versions are expected to be available few days after the Japanese release.
Shizowa san did also let us know that besides the 3 shader options announced earlier this week, the pc version is identical tothe recently updated console version.
The required pc specs for playing the game will been disclosed next week..
source: SF4 dev blog