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...
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...