Just a quick note: most commercial software have a very relaxed schedule, with one or less release/year.
Just take a look at... dunno, windows, osx, photoshop, phpstorm, etc and you will see you have (almost) no update between major releases and almost no communication either (go to adobe forum and try to get an official response!).
Not to say that exactly nobody is releasing their plans for the future!
No EULA will grant you that the software author/company will release any new version.