If you're curious as to the fate of the WoW TCG, then check out this official statement by Bornakk. While the future of the TCG has been questionable since since Upper Deck had parted ways with Blizzard, that doesn't mean the TCG is going to end. The upcoming Wrathgate and Icecrown expansions are still on pace for the spring and summer. Realm Championships will still happen this weekend around North America, and all announced prizes will still be awarded (but trophies will not be ready yet).
For the full list of North American locations, check out that same thread.