Can you buy it? AMD arguably made "ok" CPUs (talking within past 2-3 years), and even some mildly interesting ones. But could you buy them anywhere? Oh, you might find something on eBay from the Russian Federation or something like that, but it would just be a part, then you have to find a mainboard, etc..
Several major distributors have stepped up on the stage with AMD.... the question is: Will they deliver? Or will this be a case of "one or two" non-configurable options up against a plethora of offerings from Intel.
AMD needs to learn. It's hard work. And you can't rest. Last time AMD put a dent into Intel (taking about 17% of the server market in a quarter), AMD chose to celebrate and relax for the next XXX years. And Intel, excuse the pun, came in and cleaned their clock, tick tock.
Looks awesome, but if I can't buy it, worthless. And AMD, be prepared, Intel doesn't sleep (for long) and I don't think they'll even give you 5% of the market this time.
Hope they succeed, but AMD hasn't proven that they can sustain...