The French version of Amazon's website has Marvel vs. Capcom 3 listed for a future release on the PlayStation Vita. Some news outlets suggest that Ultimate Marvel vs. Capcom 3 could be making its way to Sony's upcoming touchscreen handheld, but the site shows no reference to Ultimate.
An Ultimate Marvel vs. Capcom 3 release on the PlayStation Vita shouldn't come as too big of a surprise. Capcom announced at E3 this year that Street Fighter X Tekken would see a release on the new handheld.
[Listing spotted by Gematsu]
