Yes, there was a confusion with iTunes latest update version, its access and download link all together!
Not sure why the download was made available to the public so late, but this did not help as the previous versions would normally not work well with IOS9 and tits update on the phones.
Not sure for Windows, but the latest iTunes Mac version is now available from yesterday sometime on the App Store as an update; hopefully Windows PC have now the same as well?
I understand how you feel about Apple; however if you look at it overall, it is still pretty good if compared to Microsoft, with less much less issues.
Having said that....I remember the Apple days when almost nothing of a sort would happen; this is many years ago when I switch from Windows to Apple....and working with Apple then was a true blessing.
I guess Apple is trying so hard to do more and more; they are in a way stuck in that "Rat race" where it is becoming more and more difficult to remain "faultless", as the public wants more and more, and every devices that comes out must also do more and more!
With increased functionalities and performances....comes increased bugs and troubles at times; a bit like a formula one to tweak over and over! Maybe, it is also our fault, as we keep on wanting and demanding more, and Apple (like others), just cannot be the one they used to be in the good old days.
Happy computing to you; nonetheless 🙂