Here's an updated overview of which programs have been renewed or canceled for the 2012-2013 season.
Canceled so far: 666 Park Avenue; Alphas; Primeval: New World (in Canada, at least); Star Wars: The Clone Wars.
Alphas -- Completed season 2 in October 2012 on Syfy. Canceled in January 2013.
Beauty and the Beast -- Currently airing season 1 on The CW. Picked up for a full season in November 2012.
Bedlam -- Completed season 2 in fall 2012 on BBC America. Word on season 3 is still pending.
Being Human (BBC) -- Season 4 aired in spring 2012 on BBC America. Renewed for season 5 in March 2012, and it began airing in the UK in February 2013. Just after season 5 premiered, BBC announced that it will be the last. The air dates for season 5 in the US are not yet announced.
Being Human (Syfy) -- Season 3 aired in early 2013 on Syfy. Renewed for season 4 in April 2013.
Continuum -- Currently airing season 1 on Syfy. Renewed for season 2, which is entering production in Canada for the Showcase network. Syfy picked up season 2 in March for broadcast starting June 7, 2013.
Da Vinci's Demons -- Currently airing season 1 on Starz. Renewed for season 2 in April 2013.
Defiance -- Season 1 will air starting in April 2013 on Syfy.
Doctor Who -- Currently airing season 7 on BBC America (season 7.5 start date: March 30, 2013).
Falling Skies -- Season 3 will air starting in June 2013 on TNT.
Fringe -- Completed its fifth and final season on Fox in January 2013.
Futurama -- The second half of season 7 will air starting in June 2013 on Comedy Central.
Game of Thrones -- Season 3 is airing on HBO. Renewed for season 4 in April 2013.
Grimm -- Currently airing season 2 on NBC.
Haven -- Season 3 completed at the end of 2012 on Syfy. Renewed for season 4 in November 2012.
Lost Girl -- Currently airing season 3 on Syfy. Renewed for a season 4 in late February 2013.
Merlin -- Currently airing season 5 on Syfy. The fifth season will be its last, it was announced in late November 2012.
My Babysitter's a Vampire -- Completed season 2 in October 2012 on Disney Channel.
The Neighbors -- Currently airing season 1 on ABC. Picked up for a full season in November 2012.
Once Upon a Time -- Currently airing season 2 on ABC.
Orphan Black -- Season 1 start date on BBC America: March 30, 2013.
Revolution -- Currently airing season 1 on NBC. Picked up for a full season in October 2012.
666 Park Avenue -- Canceled in November 2012. Nine episodes of season 1 aired on ABC, ending at the start of December 2012, leaving four unaired.
Star Wars: The Clone Wars -- Currently airing season 5 on Cartoon Network. A season 6 was anticipated, along with a network change to Disney XD; but Disney announced the series would end as of March 2013.
Supernatural -- Currently airing season 8 on The CW. Renewed in February 2013.
Teen Wolf -- An expanded season 3 will air starting in June 2013 on MTV.
Touch -- Currently airing season 2 on Fox (start date: January 2013).
The Troop -- Canceled in 2011, but with a handful of unaired episodes still occasionally cropping up on Nick.
True Blood -- Season 6 will air starting in June 2013 on HBO.
The Vampire Diaries -- Currently airing season 4 on The CW. Renewed in February 2013.
Warehouse 13 -- The first half of season 4 was completed at the start of October 2012 on Syfy. The remaining ten episodes will air starting in April 2013.