I got an eMail about the new update , I believe it is 3186. When I click on update when running Parallels 1970 it tells me my version is the latest version. When I click on the update link in the email I got from parallels, I get an offer to buy Coherence for $79. The email said my parallels would update automatically the next time I used it, it did not. Is the update free to existing owners of parallels or not?