Yeah, I'm waiting for an itch review (I gave them an email poke too).
Roughly, I had a false positive on the upload day (from Windows Defender, at least elsewhere). I did a scan of the build folder which came up clean, redid the zip using 7zip instead of the Windows built-in function, the new zip doesn't have the false positive, replaced it here, but itch is being very cautious and hasn't cleared the quarantine (and I believe has extended it to my other two games after I updated them).
Itch hasn't sent me anything so I'm kind of guessing (especially since none of it shows for me), but hopefully they'll clear up if I need to do anything extra.