No one knows anything about any new talents in Wrath of the Lich King except the developers. Period. Anyone who claims otherwise is lying.
Don't worry about it. Two things:
1) The expansion probably won't be out until next year at the earliest. Blizzard has a long history of releasing products when they're done, and no sooner. They don't even set a release date until they're satisfied in the quality of their product. So don't worry about planning for talents that may not be available for a year or more.
2) Right before Burning Crusade was released, there was a large patch (2.0) which introduced, along with many other things, the new talents. All classes had their talent points reset. I wouldn't be surprised if they do something similar for WotLK. So, odds are good that you'll get to respec when the expansion hits anyway, so don't worry about it.
Ok, so, basically...
don't worry, be happy. :D