By my reckoning we have 2 druid tanks, 2 pala tanks, and 1 warrior tank. No DK tanks although Parzifal keeps making noises about getting some tank gear.
Healers we have 2 palas (or will have shortly, I think Theakston is about ready for the easier raiding bits although I wouldn't put him up against patch just yet), 1 druid, 2 priests, and no shamans.
Having Splishy as a healing option will be a bonus, currently 2 of the tanks are also 2 of the healers so the setup is not quite as flexible as it looks.