When can i play as pac man on my ps3

bought street fighter x tekken at midnight monday
got the special edition version from gamestop
i see pac man and mega man in char menu
cant select them
how do i unlock them


found answer to my Q March 13th
source: http://shoryuken.com/2012/03/02/street-fighter-x-tekken-mega-man-pac-man-available-for-ps3-on-march-13th/