A paper was published this morning at a Computer Science conference CSCW2010 (http://www.cscw2010.org). The paper is called Street Fighter IV: Braggadocio Off and On-line, and was written by Norman Makoto Su. It’s about all the hype of SF4.
You can find the paper here: http://www.cscw2010.org/program/papersnotes.php (search for “Street Fighter IV”)
The actual pdf is here: http://www.ics.uci.edu/~normsu/papers/Su-SFIV-CSCW10.pdf
It’s a very nice read.