These are the very high end chips. Coming in at almost half the price of the comparable Intel for the same thing is very good. It's even better that they are doing three models, because Intel only do one 8 core desktop CPU and it's a bag of sand almost.
Put it this way. If you did not buy X79 at launch and you did not buy X99 at launch this isn't for you. You either don't have the cash or you don't need the cores, one of the two.
The "mainstream" parts have yet to be confirmed.
I won't be buying this because I don't want it, can't afford it and certainly don't need it lol.