Re: NVMe/TCP is on the fast track for standardization
Just like with iSCSI, we expect every operating system and hypervisor to include NVMe/TCP client drivers. For Linux, NVMe.org will submit drivers upstream as soon as the standard is ratified. For other operating systems and hypervisors that are not Linux-based, either the OS vendor (for proprietary OS's) or the community (open source OS's) will contribute drivers. If someone needs help creating drivers that follow the spec, Lightbits will be able to assist.
As to "replacing SAS with TCP", the Linux TCP/IP stack is pretty awesome. I think that you will be surprised by what NVMe/TCP can do. You can find more information on our website, http://www.lightbitslabs.com.