Re: By next year....
'support' and actually support by developing drivers that actually work for operating systems with features in the spec are 2 different things.
Take the connectx2 infiniband cards. No official support in esxi5.5 for over a year and after no support anymore for rdma protocols like srp/iser, same in server 2012r2, only 2008. No planned updates to do so. Stability problems that don't get fixed.
Only Linux gets these features and have actual proper driver support due to the ofed community.