We’ve got two new AMD motherboard chipsets arriving shortly, so they won’t benefit from it. The nearness of the Haswell CPU and chipset rules it out, too.
So, yes, that “24-month” possibility is probably closer to a good implementation. The first generations are usually hobbled somehow - “a single stick of 256k DDR4 can run twice as fast but won’t enable dual-channel, and multiple sticks require speed reductions” - that’s been the history of first-delivered memory controllers.
They’ll probably deliver a first-gen in 12 months? Then sometime after that, the good implementations arrive and finally the Real Ones.
There’s always hope, though. It always reminds me of my favorite American poem…
[I]Oh, somewhere in this favored land the sun is shining bright;
The band is playing somewhere, and somewhere hearts are light,
And somewhere men are laughing, and somewhere children shout;
But there is no joy in Mudville…[/I]