That is all correct, it is the current version

Paul Scroggins
Associate Technical Support Analyst

"Does WB11 support all of the existing skins that WB10 supports??  Because I have dozens of existing skins, including some older ones, and I don't want to lose support for them..."

and the main response that I got (from @jafo) was:
"If you are not going to switch to Windows 11 for a long time then I would currently stay with WB10, particularly if you are currently happy with its functionality."

Here is the relevant thread:
https://forums.wincustomize.com/514688/page/1/#3864597

and BTW, this point is still relevant for me, as well...
I wouldn't *at all* mind the option to download the WB10 installer as a backup.

I have *NO* intention of switching to Windows 11 before I absolutely have to, in 2026 if not later...

Okay, this entire thread apparently was a red herring... as @basj noted below, I *can* download the setup for WB10, from my products page...

I just went back and re-read the original post, and realized that they were wanting to *purchase* the previous version... I can certainly understand the company not wanting to sell (and implicitly continue to maintain) earlier versions...

So my comments here were completely misguided... sigh... sorry about that...

And thank you once again, @basj , for your patient responses and support!!

Ahhhh... okay, you are correct, @basj ... sorry about that!! 
Nevermind, as Emily Latella would say...

Heh... I can even download a copy of the WB5.5 installer!!  The only one I cannot get any longer is WB3.3, though I still have my registration codes for it, dating to 2002 ...

Nah...February 2000 ...WB 11ZF looks like the oldest...unless there's something hiding in an old HD somewhere...