Killer Instinct is free-to-play, includes one free character

Xbox One fighter Killer Instinct will be a free-to-play title.
It will include just one freely accessible character – Jago. The rest of the cast, which consists of both old and new faces, will be available as premium downloads.
Whether this point to an overarching strategy change from Microsoft remains to be seen.
The game itself is heavily combo-orientated and features big, bold characters.
Although the original game was made by the now Microsoft-owned Rare, this new version is being developed by Silent Hill: Homecoming, Battleship and Green Lantern developers Double Helix.

http://www.mcvuk.com/news/read/micro...racter/0117013