I'm surprised they actually put a face to her. Great finale though, it'll be interesting to see where things go from here.
There's still speculation that this is yet ANOTHER trick by the writers, and that it's not actually his wife. I don't think that's true though. It'd be different if this was yet another mid-season fling for Ted, but the timing of it leads me to believe that this is the one. Also, they've been hyping up Barney's future wedding for quite a few years now, and when we find out that the implications of said wedding (where Ted eventually meets the mother), it would just be anti-climatic to have all this hype build to nothing. Plus, it's not like there won't be any dramatic tension for the next season if Ted ends up meeting his future wife in an early episode -- you still have Marshall's job offer that he took (that he still hasn't had a chance to tell Lily about yet), you have Ted thinking that Robin is still the love of his life... lots to build on yet.