Seth Killian has just announced an extra sfIV feature that comes exclusively on the PC version of the game: Extra Shader
Seth Killian: "Street Fighter IV PC unites classic characters like Ryu, Chun Li, and Akuma with new challengers and gameplay for the next generation. It preserves the classic 2D mechanics and familiar controls, but frames the action with gorgeous new 3D models and amazing backgrounds.
SFIV PC is a Games for Windows Live title, so in addition to online play, it will support PC achievements and voice chat. It will also offer higher screen resolutions, and three new optional shaders based on the artistic trailers: "Watercolor," "Poster," and "Sumi-e ink" style "
A release date of the PC port will be announced May 1st.
Check more Screenshots from the pc version here
source: Capcom Unity