No, nothing 'needs' to be said.
GUI customizing software has always taken longer to adapt to a new OS because it integrates with that OS, whereas something simplistic [relatively] like Photoshop generally doesn't care what OS it's being used with.
A VERY GOOD example. I use PaintShop Pro 6, and have for a very long time because I am used to using it specifically.
I have it installed on WinXP without issue.
Ditto on Vista
Ditto on 7
Had it on 8 and 8.1 without issue [other than hating the OS].
Have it on Win 10 on 4 systems and on Win 7 currently.
It does not care.
However, not 1 of those Shells is the same, ergo no integrating Shell enhancement can work on another of those without considerable levels of alteration.... perhaps even total rewrite.
Meanwhile, yes I have any of those OS's with PSP6 happy ...other than it being a 32 bit program that cannot see as much ram as I would like since I'm on 64bit OS's...
People who have been using Skinning software mostly understand this issue, and it's been a long-standing Stardock policy to NOT promote release dates until that notification can be relied on to be at least close to correct so as to not disappoint...