Keeping this up to date... I found some information that says 21h2 will be the next/last Win10 LTSC https://blogs.windows.com/windowsexperience/2021/07/15/introducing-the-next-feature-update-to-windows-10-21h2/
No date set but several sites are guessing October 2021 release.
Now as far as being able to get this, I truly hope that MS has changed direction and will just offer this as a download through the normal licensing portal. For those of you stuck in the past (like me) WDS is not going to be able to deploy Win11 without some work in MDT to prepare the boot.wim image. And then you might as well keep using MDT to deploy the install images and applications, but I'm looking at 127 pages of document and probably hours of "hands on" to make sure I have a decent grasp before trying to deploy Win11. Not to mention that half of the media editing apps we use will not support Win11 for several months (to a year).
Also after playing with the Win10 21h1 Enterprise Eval in my virtual lab, uggg! Why can't we start with something like LTSC, then have a "stuff" installer to add all the other "stuff" if we want it. Take something that normally uses under 10GB and make it just over 20GB with all the extra "stuff" that we then need to try and remove. Grrr! This makes me appreciate the LTSC releases even more.