They should do upgrades for free, it's unfair that they come up with some new fixes and ask us to pay for it.
Why do you think there should be free "upgrades"? Do you believe if you buy you Oticon HA and 5 years later when sound processing technology is developed that you should get a free "upgrade" to the newest one? When you buy a computer, do you believe two years later when the processor is twice as fast, Intel owes you a new computer?
Now, if they are fixing bugs, I agree with you. But typically that is a firmware/software upgrade. But just because new features are added doesnt mean someone is entitled to get the latests and greatest.
C1