ro.keys
14
To me it seems like they have kind of “exhausted” the possibilities for creating new stuff in their traditional domains. Most of what they release nowadays falls under the category “Nice to have if it’s included in Komplete, but I’m not buying that on its own”. They are making progress, but mostly in products that I’m not really interested in (e.g. all the strummed guitar Kontakt stuff).
Absynth, I have never really used it that much, perhaps because I have never really taken the time to fully understand it… Maybe I will now that it is old school 
My guess as to why they have removed it is that there’s some little technical limitation (e.g. they’re using some library that got an update which broke something in the code) that would not be terribly hard to fix, but working it out isn’t worth it to them any more.