According to Alex J. Walling at TSN, pretty much a done deal:
Newfoundland, which has plenty of Moose, is getting one more. The Manitoba Moose are coming to the Rock.
The Manitoba Moose will re-locate to the capital city of Newfoundland, St. John’s. [...]
The St. John’s Telegram says a tentative agreement is in place between Williams and True North Sports - the owners of the Manitoba Moose - and that True North has agreed to house its American League team at Mile One Centre for the 2011-12 AHL season.
The St. John’s Sports and Entertainment Centre is meeting to approve a deal between that body in charge of Mile One and the Williams group. The deal will be approved.