I've been more than happy with my D7000. I don't know if there will be a D7100 this year but I have doubts. I think we will see a D400 or 600 before an improved D7000. Main reason is that Nikon have to replace the older batteries of the D300, 300s. They are not allowed to sell these in Japan anymore. The D7000 already has the new approved battery (same as D800).
As much as it's nice to be able to say that you have the latest and the best, is that really what you need? Only you can answer that. Would you rather have a great camera now or wait for the announcement of a new model that you might even not get before another 3-4 months because of the demand?
I know it's not easy to decide, but at some point, you will make the decision and will live with it. I see no reason why you would not be very happy with a D7000.
Think about it and when you get sick of thinking, go out and spend that money.