The Digital Deluxe Edition comes with the base game along with a character pass that gives instant access to six DLC characters, one of which is Sigma. You can check out the product description of Marvel Vs. Capcom Infinite Digital Deluxe Edition below:
Includes the Marvel vs. Capcom: Infinite full game and Character Pass. The epic clash between two storied universes returns with Marvel vs. Capcom: Infinite, the next era of the highly revered action-fighting game series. Marvel and Capcom universes collide like never before as iconic characters team up for action-packed player-versus-player combat. Ultron Sigma has begun the systematic eradication of all biological life. Against all odds, heroes arise from the rubble, form new alliances and stand together against the ultimate threat, their only hope laying with the all-powerful Infinity Stones.
Marvel Vs. Capcom Infinite will be released on the 19th of September in the North American region. In addition to the PlayStation 4, the crossover fighting game is also coming to the Xbox One and PC.