According to the updated official "End of 2014" Supercharger map of North America the following few Supercharger stations are likely and should go live before January 1st, 2015 (or a few days/weeks later):
Kamloops, Canada
Revelstoke, Canada
Canmore, Canada
Red Deer, Canada
El Centro, CA
Lake Charles, LA
Auburn, AL
Atlanta, GA
Auburn, MA
Brattleboro, VT
Hooksett (south), NH
Hooksett (north), NH
A Supercharger station east of Dayton, OH (Grove City, OH?)
A Supercharger station north of Dayton, OH (Lima, OH?)
But nothing is sure.