This is also news to me, in regards to GTX285 vs the Quadro. From the tests and benchmarks and specs I’ve seen, as far as CUDA performance, the GTX is actually a stronger card. I have a hard time justifying the expense of a Quadro based on that.
As far as being end of life, that phrase can be applied to any computer component the moment it hits retail. I think the best possible thing that Apple can do for us with the next Mac Pro release is to add sufficient PCIe and power to enable us to stack 2+ GTX285s or what have you.
On the other hand, I’ve always found the apple tax on mac GPUs a bit of a travesty. The cards are overpriced compared to their PC counterparts and underperform compared to running the same card in windows bootcamp.