I just saw:
http://www.zdnet.com/blog/btl/tech-giants-form-ssd-working-group-to-bolster-enterprise-adoption/40980?tag=nl.e539
Looks intriguing in that they want to come up with an extension to the PCIe spec. specifically for SSDs.
I "assume" the concept is for a SSD that is built into a PCIe card. And that main command protocol will be based on SAS, not SATA.
That should be very interesting. I'm not sure it will take much in the way of new code for the kernel. We'll see how it shakes out.
Greg