According to www.gameplayer.com.au retailers accross Australia have broken the street date of Street Fighter, which was supposed to be February 20th, and are now selling it to the public.
From the article: "Apparently a number of stores in Sydney and Melbourne broke the street date (originally planned for Feb 20) prompting THQ to offer a blanket ‘go for it’ to stores countrywide. We talk of both the Xbox 360 and PS3 versions of this highly anticipated game, retailing for AU$119.95."
Also, Capcom unity board member confirmed the news by posting a picture of his Collector's edition of the game (seen above).
If you live in Australia you better take some time of your work and go hunt down a copy of this masterpiece called Street Fighter IV ;-)