At least that's what NHL.com's shop is telling us...
H/t to Sombrero Guy on the link.
Update: And the link has gone dead. For more on the apparent gaffe, head over to FanHouse, Puck Daddy and Mirtle.
Of course, if you can't wait to get your hands on an AO/Hart t-shirt, there are other options.
Update2: TSN.ca now has an article up on the story, as does CanWest. Obviously they found it on their own. Definitely not via Puck Daddy, FanHouse or Mirtle. Clearly.