I haven't heard anything about the Col. Carter show, is it another spin off?
Amanda's new show is called Sanctuary. She plays a monster hunter (Helen) seeking out her former lover (and father of Helen's daughter Ashlee) John (Played by Christopher Heyerdahl) who can teleport, but when he teleports is changes his DNA. John ultimately becomes Jack the Ripper, but time travels to fulfil his bloodlust.
Other people on the shows...
Christopher Heyerdahl - Known better as Todd the Wraith and Halling (Athosian friend of Teyla)
David Hewlett - Rodney Mckay
Ryan Robbins - Ladon Radim (Leader of the Genii)
Chuck Campbell - Chuck the Technician on Atlantis
Peter DeLuise - Stargate Writter/Director
Paul McGillion - Carson Beckett
Leah Cairns - Lieutenant Margaret "Racetrack" Edmondson from Battlestar Galactica
Kavan Smith - Major Lorne
From what I understand episodes will start airing starting the week after the mid-season finale for Atlantis.