But you didn't pay for it! You only paid for using A6 for a long time.

The people, who bought it in the last weeks/month, couldn't use A6 as long as you did. So because they were really near to the A7 release, when they bought GameStudio, Conites is generous and give them A7. As a result of that Conitec had to decide an order date, until which the free A7 upgrade is included.

Or do you have an other idea to handle that?!
I think it's just nice and nothing standard...