LMAO,now the hype bandwagon has moved to AVX512. Hardware enthusiasts on tech forums were hyping up AVX MK1,which took years to show any market usage,then when didn't get traction it was AVX2 and now its AVX512. FFS,both SB and BD support AVX but even then its fairly limited in usage.
By the time AVX512 is actually used in any meaningful way for single socket desktop PCs there will be much newer CPUs out there and all the hardware enthusiasts would have moved onto the next hyped extension. It was the same hype with TSX too - all the PC gamers and hardware enthusiasts on forums were bigging that up,yet at least on the consumer side its not really done much.
On top of that in the commercial markets it seems to not really made as much impact as enthusiasts think it has - Xeon Phi has AVX512 support and apparently Nvidia was doomed,but they seem to be holding their own.
Lots of servers out there actually still run legacy code anyway,and it takes a long time for software companies to change over to newer extensions. This is because they need to think of the pre-existing userbase,not hardware enthusiasts who upgrade every 5 seconds.
The problem is that if AMD,Nvidia and ARM licensees don't support it either,then it needs Intel to keep pushing it,which is why AVX/AVX2 has taken yonks to get anywhere.
Coffee Lake appears to not support it either.
So basically most of the Intel powered gaming PCs and productivity desktops out there for example won't actually support AVX512.
Edit!!
The main issue,is the AVX512 functionality costs a lot of transistors. This is what AT had to say:
Given what we know about the AVX-512 units in Knights Landing, we also know they are LARGE. Intel quoted to us that the AVX-512 register file could probably fit a whole Atom core inside, and from the chip diagrams we have seen, this equates to around 12-15% of a Skylake core minus the L2 cache (or 9-11% with the L2). As seen with Knights Landing, the AVX-512 silicon takes up most of the space.
Second Edit!!
Also the consoles don't support AVX512 either,so do people honestly think for gaming it will start to see any large scale usage at all?? Again it would require Intel to pump more money into forcing devs to use it.
Third Edit!!
Apparently looking over on AT forums,even AVX512 support is segmented too(12 different sets),so that means even if AVX512 support were to start becoming more relevant in a few years there is no guarantee whether the current chips will be that great at it anyway,as they are not fully compliant even now let alone if there are any new additions.