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; Futurama; Touch.
Alphas -- Completed season 2 in October 2012 on Syfy. Canceled in January 2013.
Beauty and the Beast -- Completed airing season 1 on The CW. Picked up for a full season in November 2012. Renewed in May 2013 for a second season.
Bedlam -- Completed season 2 in fall 2012 on BBC America. No word on a season 3.
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 2 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 began airing in April 2013 on Syfy.
Falling Skies -- Season 3 began airing starting in June 2013 on TNT.
Fringe -- Completed its fifth and final season on Fox in January 2013.
Game of Thrones -- Season 3 is complete on HBO. Renewed for season 4 in April 2013.
Grimm -- Season 2 is complete on NBC. Renewed for a second season in May 2013.
Haven -- Season 3 completed at the end of 2012 on Syfy. Renewed for season 4 in November 2012.
Lost Girl -- Completed airing season 3 on Syfy. Renewed for a season 4 in late February 2013.
Merlin -- Completed 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 -- Completed airing season 1 on ABC. Picked up for a full season in November 2012. Renewed for a second season in May 2013.
Once Upon a Time -- Completed airing season 2 on ABC. Renewed for a third season in May 2013.
Orphan Black -- Season 1 began on BBC America March 30, 2013.
Revolution -- Completed airing season 1 on NBC. Picked up for a full season in October 2012. Renewed in May 2013 for a second season.
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 -- Completed 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 -- Completed airing season 8 on The CW. Renewed for season 9 in February 2013.
Teen Wolf -- An expanded season 3 began in June 2013 on MTV.
Touch -- Completed airing season 2 on Fox (start date: January 2013). Canceled as of May 2013.
The Troop -- Canceled in 2011, but with a handful of unaired episodes still occasionally cropping up on Nick.
True Blood -- Season 6 start date: June 2013 on HBO.
The Vampire Diaries -- Completed 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 began to air starting in April 2013. In May 2013 it was renewed for a drastically abbreviated fifth and final season.