The arcade edition jokes stop here.
Ultimate Marvel vs. Capcom 3 (UMvC3) caused controversy. It wasn't because of the game mechanics, it was because the original title was released earlier that year (2011). To make matters worse for detractors, UMvC3 was on a disc for $39.99.
This time, Capcom has no plans on making history repeat itself. See the statement from Capcom-Europe on DLC for Street Fighter x Tekken (SFxT) below:
"Releasing soon on the PlayStation 3 and Xbox 360 Street Fighter X Tekken is the newest addition to the Street Fighter family and will rely heavily on player feedback as a way to enhance and evolve the experience. Exciting new features and additions will be consistently introduced, allowing fans of the game to tap into a wide variety of robust Downloadable Content (DLC) options that will breathe new life into the product. The retail version of Street Fighter X Tekken will be the only disc-based version consumers will need to own and all future upgrades will come from post-launch DLC."