Imagine if you would arc system works getting their hands on Ultra Street fighter IV and then imagine the ex version of your favorite character. If you can imagine what I have described to you then you understand what Omega mode brings to the table. I said arc system works because the article states that omega mode gives everyone new moves and properties almost like arc system works unlimited character from Blazblue or guilty gear ex. The video below shows four characters as an example and only touches on what they can do. To prove my point the video only touched on specials and commands no supers or ultras. the characters shown are Ken, Guile, Chun Li and Dhalsim The patch is free so people who have this game be prepared to be blown away.
Article:http://www.dualshockers.com/2014/09/20/ultra-street-fighter-iv-patch-ushers-in-omega-mode/
As always thank you for reading.