My recommendation would be not to wait, just go ahead and whatever camera fits your needs and your budget. I wanted the replacement for the D300s which was rumored to come out last August. There was no announcement, so in mid-September I bought the D300s. Since then, I have taken thousands of pictures and there is still no sign of its replacement.
Since this is your first DSLR, you will have plenty to learn without worrying about whether its the latest model. Most new models have only modest improvements over their predecessor anyway, so you won't be missing much. Concentrate on developing your photography skills and getting the most out of whatever camera you end up with. Some day (years) in the future, you will start to outgrow it and you'll be in a position to know exactly what features you want on your next camera.