The remaining three CPT hostages (Harmeet Singh Sooden, Jim Loney and Norman Kember) were rescued by a joint U.S. and British military operation. They're unharmed, and I'm sure they and their families are not only grateful but ecstatic.
There are a lot of articles out there related to their rescue if you google for them. Here are a few.
Reassing Presence in Iraq
CPT Press Release
More of the Rescue
Still missing is Christian Science Monitor journalist Jill Carroll. Prayers and good thoughts are with her and her family. I hope they receive good news as well soon.