Hi Hans, yes there will be a grace period of a couple of months where if you purchased V3 within a couple of months (exactly how long hasn't been decided yet) of the new release you will get a free upgrade to v4.

But the v4 final release is still a ways out, the beta test period has only recently begun and it will be a while yet (current guess is 6 to 9 months) before the v4 final release is ready so we're not in that grace period time yet.

- Michael