Whitepaper is behind a wall, so I can't read it, but I assume it is another in the large and growing class of explits that cannot practically be exploited like Spectre or the load-store buffer that didn't stand a snowballs chance in Hell or creating a workable exploit that didn't' require immense cooperation from the target (literally accessing the same address in a loop and and nothing else).

Still no spectre exploit (or even attempt) found in the wild. There should have been something by now.

If anybody has access to the POC code I would love to see it. Until (and probably after I see how laughable it is), I'll assume this is just a press release by some security company.