UPDATE: Here is the official statement from Syfy:
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No official announcement yet, and no word if the story will get an ending or they are leaving it unfinished, but here is the news:
Syfy’s drama Alphas is ending its run after two seasons. “Syfy has decided not to renew Alphas for a third season,” the network said in a statement. “We’ve been proud to present this entertaining, high-quality series for two seasons and to work with an incredible ensemble of talented actors, producers and creatives as well as our partners at BermanBraun Television. We’d like to thank the show’s dedicated regular viewers for their tremendous support.” Alphas, from BermanBraun, Universal Cable Prods and creators Zak Penn and Michael Karnow, followed a team of ordinary citizens who possess extraordinary and unusual mental skills. The series starring David Strathairn was most recently run by Bruce Miller who executive produced Season 2 alongside Penn and BermanBraun’s Gail Berman, Lloyd Braun and Gene Stein. Karnow served as co-executive producer. The second season of Alphas launched in July to 1.7 million viewers... -- Deadline
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No official announcement yet, and no word if the story will get an ending or they are leaving it unfinished, but here is the news:
Unfortunately #Alphas is cancelled :(
— Ryan Cartwright (@RyanCartwright) January 17, 2013
Sad to say that ALPHAS will not be returning. What an honor to get to play Rachel for 2years & to work w/ & for the MOST AMAZING PEOPLE EVER
— Azita Ghanizada(@AzitaGhanizada) January 17, 2013
Like my buddy @ryancartwright has reported, unfortunately #Alphas has been cancelled. Thanks for tuning in the last couple of years!!
— Warren Christie (@HWarrenChristie) January 17, 2013
Thanks for all your love for the past couple of years...Sad to say @alphas won't be coming back.Will miss our lovely crew and cast.
— Laura Mennell (@L_Mennell) January 17, 2013