Ah, I see. Many thanks for your detailed answer and screenshots. That looks totally different to my last experience...
Maybe it was simply too late and I have overlooked the important "Updated Date" label. Also possible I was temporarily logged-out on my 2. machine (laptop)... That would explain the difference in displayed infos. Sorry for the panic!
Version number, Updated Date:
Why is it only visible after purchase?! At least Version and Updated could be visible all the time.
Changelog:
I see, now it makes sense to me. The changelog is part of the downloads list. I expected to see this info for every file, no matter if i purchased it, or if i am a guest visiter.
Filenames:
o.k., Downloads also includes my mentioned filename scheme ;-) )