The most up-to-date list was from a promo email that went out last week:
California: Gamelandia, 290 California Ave, Ste A, Palo Alto, CA 94306
New York: Legendary Realms Games, 294 E Montauk Hwy, Lindenhurst, NY 11757
North Carolina: Hangar 18 Hobbies, 112 Kilmayne Drive, Cary, NC 27511
Texas: The Forge Hobbies and Games, 14520 Memorial Drive, Suite 28 Houston TX 77079
Washington: Zulu's Board Game Cafe, 10234 Main St Bothell, Washington 98011
Canada: Ogre's Den Gaming Club, # 23, 3220 5th Avenue NE, Canada.
Germany: UniPlay e.V., Heckerdamm 210, 13627 Berlin, Germany
UK: Travelling Man/Leeds Wargames Club - Hicks Hall, 60 Bankfield Terrace, Leeds, LS4 2RE, United Kingdom
Ireland: The Gathering, 43 Lower Gerald Griffin St, Limerick, V94 Y1F7, Ireland
Apparently one more location is waiting to be confirmed, there's an announcement planned for tomorrow according to the same email.