As far as I can tell with my version, the updates have been few and far between ( if any). My versions is from November and just checking CCC that seems to be the latest version. I believe that was the first release.
I do see there is an update for local documentation so I'm downloading that and will see if it's HS specific.
I'm 100% fine with that as the reason I bought it was to not have to worry about updates and whatnot. I wanted a stable, solid version of Sonar to use for live performance and so far it seems that my hunch was correct, and that's what I got. I've yet to experience any bugs or weirdness.
Cakewalk really needs to go over all it's articles and help files. Searching the Knowledge base is pointless and you have to use Google. That ends up dragging up very old files that without paying attention could be absolutely dead wrong information that someone might think is the gospel truth.
This forum is defiantly about the best way to learn and ask questions but that does not help Home Studio owners much as it's not exactly peer to peer because most of us are using Sonar PLAT. Sonar Plat has possibly 80% more to it and with that 80% more ways to do things.
I've seen a lot of HS owners getting wrong answers to question because of this. So we're a very small group of people using this version at this point. I think it will grow and with that more help will arrive.
A specific manual would be great but I can only imagine it's a very low priority.