Royal's Tristars are gone. Currently they're flying A310's (4), 757's (3), and 737-200's (9). They also seem to be in the process of adding more 732's (also note that some of their 737's are in all-cargo layout).
Air Transat has L-1011's (have 15, actually added one or two -500's last year although some of the older ones are going to go. Also, I'm not sure if all 15 aircraft shown on the register are flying), 757's (5), A330's (2 -200's, 1 -300), and is adding 6 A310's (1 is already in service).
Canada3000 has 757's (5), A330-200's (4), and A320's (8, although I believe 2 of them are just for the winter on lease from Monarch). Also, C3 has 9 (I think it was) A319's on order.