i think this is what you are talking about:

from anandtech
"The demo also used NVIDIA's sterescopic 3D technology - 3D Vision. We're hearing that the rumors of a March release are accurate, but despite the delay Fermi is supposed to be very competitive (at least 20% faster than 5870?). The GeForce GTX 265 and 275 will stick around for the first half of the year as Fermi isn't expected to reach such low price/high volume at the start of its life."