Hi, i have purchased license for Parallels Desktop 10 on my mac. I received yesterday an email with subject "You are running a 3-yr old version of Parallels Desktop - Upgrade to the latest version with 100+ new features". In this email is link to buy upgrade to Parallels Desktop 13 for 49,99 eur. Can I upgrade my license to version 13 ? Because normal upgrade is possible only for version 11 and newer.. thanks for your information. S.