According to Nintendo Life Tales of Monkey Island: Ep 1 should be released tomorrow, 13 July on Wiiware for North America. Consider it a rumor until you hear it direct from Telltale or Nintendo themselves though.
Let's hope it's true and the PAL release follows quickly on Friday 17 July! Yeah, so Nintendo Life reported a piece of IGN guesswork. Heh. Still hoping for a PAL region release this Friday though...
Source: Nintendo Life