Nikon just rocked the photography world with the D800, which is arguably the best digital camera ever made. With an MSRP of $3,000 (body only), it's well within the reach of the masses.
Now Nikon announces the D3200, a 24 megapixel DSLR with an APS-C sized sensor. With an MSRP of only $700 (body only), it will be hard to pass up this camera.
I expect that when DxOMark publishes the results of their tests, and when reviewers post side-by-side comparisons of 100% crops, that this camera will come pretty darn close to the Canon 5D Mark III in image quality. If so, that would be a big blow to Canon.
If you are in the market for a DSLR and don't want to fork over $3,000 for the D800, I'd wait for the D3200.
Of course, cameras don't make photographs, photographers do. Neither Nikon camera will improve your photography. Equipment is not nearly as important as some would have you believe.