Good move. Good foundations explained. Actually, a good explanation. But still there’re few questions unanswered anywhere:

1. I’m user from 2015. I’ve bought both versions. How many months will I get for free? (You’ve just said “ok, download new version and see” — so the next question is:)
2. If I download new version (just to see how many), what will happen to old one? If I decide to stay a little while with old one after I downloaded new — will it be possible to do?
3. And, by the way, how long will the limited time offer exist? How fast do I need to decide?

Having all these questions unanswered I need to make a decision without full picture at my hands