It was during a broadcast - some people were sporting them at the game that night and the announcers said they'd already been selling at the aforementioned venues. I'll do a little sleuthing and see what I can come up with.
They're on sale at the Joe, Hockeytown Authentics and the Cafe.
Authentic, EDGE? As in what the players will wear during the game?
I went to Hockeytown and they didn't have them, and said they didn't know if they would. Called Hockeytown Cafe and they said the exact same thing. The lady at Joe Louis didn't really have any idea.