Seems to be their S.O.P, aquire a fantastic license with lots of fans and potential for fantastic products then wait ages, make as little as possible before going back to suck on Iron Man's udders.
: lol
On the plus side, this is the 25th Anniversary of MGS. There have been a few announcements and teasers with MGS Ground Zeroes, and the franchise is back in hot demand. So maybe the delay wasn't such a bad thing (perhaps it was planned).