How far off is consumer implementation for 40/100 gb LAN?

I recently set up my LAN as 10 gbe. From what I can tell 40 gbe is more for server to server infrastructure and 100 gbe is Internet backbone stuff.

In your opinion, when will I be able to order a 40 gbe switch? A 40 gb NIC? Cat 8.2 can handle 40 gb/s so we're headed there!