Mac Pro :: Potential Features Would Blow Current System Away?

I am tempted to jump on getting a new Mac Pro now instead of waiting. Primarily because i dont want to be priced out of getting the higher end model with more cores. If they do come out with a 6 and 12 core config. i would want to buy the 12 core but a lot of rumors around here and on other sites say that the new models will likely come with a price increase. potentially leaving me having to buy the 6 core model. 8 core current Vs 6 core future This makes me think i'll just get the 8 core current. BUT Are there any features that apple may add that would blow the current models away. USB 3.0, BluRay, etc. I can live without many of these things.. but perhaps i am missing something.