It's a good deal if you can use the cores, but for most consumer workloads best stick to a 2700X/8700K or 3700X/9900K when they come out.
Well yes its a HEDT chip, altho you can use them for gaming, and they work well as gaming CPU's you wouldn't buy these things specifically for gaming, if you're not buying them for gaming you're either a Youtube/Facebook browser,
in which case get a cheap £40 Pentium or you're a content creator, in which case you need the cores.
Its a specific CPU for specific use cases, it cannot be confused.
Now having said that the 9900K is not going to serve you any better than the 8700K, 8 cores vs 6 will make no difference to your gaming performance, so again this is the kind of thing that will be bought by those with content creation in mind.
That ironically will make the £900 7900X obsolete, 2 less cores but higher clocked to make up for it, because the 7900X does not support ECC Memory, does not come with M.2 bootable raid out of the box and only has 44 PCIe lanes it has nothing, absolutely nothing over mainstream, not now that Intel are offering 8 higher clocked cores.
At least Lower end Threadripper still have ECC Memory, M.2 bootable raid out of the box and 64 PCIe lanes on top of 12 cores +
You may have gathered, i rather like seeing Intel forced to cannibalise their HEDT line.
