No backward compatibility! This is crazy. We've just tried the Save As option expecting there to be an option to save for previous versions and it's not there. What a short sighted approach to take, and very frustrating.
I am not on a maintenance contract for the software, but my colleagues are, so to be able to collaborate either they have to hold back on updates or I have to upgrade.
So this is Adobe’s approach to supporting licensed users in their ability to work collaboratively? I wish there was a competitor on the market we could use instead of Adobe.