I don't think it was rushed, heck, it might even be a little delayed since the NV30 was 6 months late.
But I don't think you're looking at a card that will be signifigantly faster than the R9800PRO. Will it be faster, yes.
My bet is that Nvidia will again be the perfromance leader, after nearly a year in second place........Only to have ATI re-take the lead, drastically, with their fall offering. And so on, and so on, and so on.....