here's the official MS announcement on this edition:
http://playxbla.com/killer-instinct-...ven-pre-order/
more (useful) info on this has been posted on Penny Arcade:
http://www.penny-arcade.com/2013/10/14/pin-ultimate
also the edition name "Pin Ultimate" is a pun on the word "Penultimate"
the most up to date info seems to be going on in this thread on the PA forum:
http://forums.penny-arcade.com/discu...ity-thread/p28