AMD stated that the full EPYC stack will be available for top-tier OEMs end of July. You're unlikely to see them being sold at retail directly until the tier 1/2 OEMs have had the opportunity to take their fill for their customers. That will take a few quarters.

Compare it to Intel - their top-tier partners had the hardware last November, but Intel announced 8 months after that. AMD launched its parts at the start of that 8 months, rather than the end. That's where some of the confusion about EPYC's availability lies. No-one complained they couldn't get SKL-SP back in November because no-one said anything: I'm guessing that AMD had had to make some announcement, given the delays, the projects, and to drive up OEM cooperation/customer anticipation (and show something to investors).

Apparently, it's only available via one OEM: http://www.amd.com/en/where-to-buy/epyc-platforms

Who isn't even selling the single-socket config that I want.

On July 27, you'll be able to buy an Alienware Area-51 with Threadripper.

You'll be able to pre-order. Still no official word on when it'll ship.

With recently a flood of CPU SKUs, I suggest to wait at least end of this year for all of them widely available.

All three R7 SKUs were all readily available at launch, and so were the R5s at their launch. Now mobos on the other hand...

I just googled that. They apparently have an exclusive among major brands. Yuck. To be honest, for me, the last time I built a pre-made tower was 1994 or so. I'm really waiting for boards and CPUs to show up on Newegg/Amazon, at Fry's etc.