That's actually an area where windows is better. If your card is dropped, nothing will prevent you from running on the same drivers for a long time (i.e. years) but on linux, due to the way the drivers are tied to the kernel it is not that easy. Sure, you can switch to open drivers, but in some situations (as here with Nvidia) that's not always such a good choice...
No announcement yet.
Don't Forget NVIDIA Is Dropping Pre-Fermi From Mainline