LOL, there's a pretty good reason you aren't finding much discussion about it. I believe it was just announced or made available within the last week. Not much time for discussion at all!
Your version 11 projects *SHOULD* be fine. But I'd definitely make backup copies of them before upgrading for our dear friend Justin.
Not likely to find a lot as it was only announced yesterday. See the
RoboHelp Tour on my site. I will add a link tomorrow to Adobe's blog but
you should be able to Google it.
Your project should be OK but back up first. That should be standard procedure.
Stuff I have upgraded is OK but that does not mean every project in the
world will. ☺️
Thank you Rick and Peter. The announcement may have just happened yesterday... but two days ago I was told by my company that it was the only upgrade they will authorize... another LOL. I already make backup copies of all the files (I do that with every change to the project). Thanks again. I'll report back when I get things loaded up and tested.