Might be time to stock up on those titles if you haven't already purchased them. As stated in the video this includes the various DLC. One of which being the X-Men Evolution X-23 costume itself.
This is a sad day for fans of both X-23 and those games. As Marvel vs Capcom 3 is one of the only home console titles currently where she is featured as a playable character.
Be sure to check out Miles923's other videos as he is an amazing contributor to the fighting game scene with the tips and analysis he provides for many titles! Often they include hilarious tongue in cheek comedic flair with cosplay antics!