<<...AMD may launch Ryzen Threadripper 7000 in HEDT and workstation flavors...>>
I'll believe it when I see it with my very own eyes.
I'm a user of a TR 3960X with 256GB of memory as a development workstation + DBs + VMs + High speed networking. I remember when AMD killed the HEDT version of Threadripper for the 5000 series. The 3000 series HEDT was too good for end-users and cannibalizing the sales of the Pro version. They are plenty of start-up or professional users for which the HEDT version is sufficient, no need to pay twice the price for a Pro version.
AMD can easily fight the INTEL W-3300 series on performance, efficiency and pricing with a TR 7000 Pro Series. I see little incentive for AMD to counter the low models with a HEDT version. Maybe a little bit more incentive to counter the low models of the INTEL W-2400 series.
So if AMD comes up again with a HEDT TR 7000 series, that will be to counter the low models of the INTEL W-3300 and W-2400 series and indirectly "gap-protect" the 7950X revenues, while not going all the way up in terms of number of cores. In AMD shoes that's what I would do.
The good times of the HEDT TR 3000 series, when AMD was very hungry, are over.