They released the GeForce256, then the GeForce 256 DDR, and within 6 months of the original GeForce 256 SDR they launched the GF2?
I didn't remember it that way... but it's been a while. I didn't actually go looking for dates or anything, just going off of memory.
So... NV15 to NV20 was a year, NV20 to NV25 was a year, and NV25 to NV30 will be at least 10 months.
And some people expect to see the NV35 in the spring?