US Mint Product Release Schedule

I agree with that, however I know others will chime in about the 2008 Rev of 2007 Uncirculated.
To me that is a different class of ASE, a variety coin. As far as something the Mint intentionally released, I believe it is or will be #3. Taking into account a variety coin, it'll be #4.

I thought last year was the last year?

They did drop the Limited Edition Silver Proof Set. It would be an easy assumption that this was due to the stop in production of the S ASE. But then you have to remember that for several years at the beginning of the Limited Edition set, that the ASE was a W and the rest of the set was S.
Which ended in 2017 when the S ASE resumed and you could only get it in the Congrats set and Limited Edition set.
If things weren't so high priced right now, I'd consider making my own 2026 Limited Edition set line I did the 2015. It may be a little harder getting the COA and sleeve to look good. I'll keep it in mind, could happen some day.

that is a thought - and adding all dual dated coins would be pretty cool..

It doesn't necessarily need to exactly match what the mint did.

Sorry it took me awhile to get back to this post. One thing after another today.
I do have that good experience "making" a Limited Edition Silver Proof Set. And that one was "relatively" easy.
Some aspects of the COA was easy. Getting it printed and folded properly was hard, and is fairly convincing. It wasn't as easy as it would seem. Not as easy as I thought I'd be. The OGP was not terrible either, mainly just had to modify a 6 into a 5.
Changing a 2025 into 2026 would be another matter.
You do have to look at how the Mint would have done it. More than likely, looking at the silver proof set, they would have used dual date. Also the women's quarter part couldn't be there, probably would have used "Semiquincentennial quarters" and 5 small icons like they did for the women's quarters. More than likely they would have spiffed it up a bit. I believe the inner box would suffice as is, no date on it, but that multi gray label is kind of drab. But they probably would have used it, and they aren't dated either.
But again, it's sort of up to the person trying to create it to decide how the mint would have done it.
Or just do whatever you feel like.
Edit: am guessing the outer sleeve works use the "Liberty Now, Then, and Forever" motif.
It'd be really hard to try adding that. Probably have to try printing the whole thing. I don't think anyone could do it on a printer at home.