I want to upgrade to the version 12 But I notic this article: http://www.parallels.com/cn/techguarantee2016/ It say if you have buy the version 11 after 2016-08-01, you can free to upgrade to the version 12! The register date of my license is: 2016-07-16(the version 11), It is fuck thing, only half a month, I need pay a full upgrade fee. Parallels, You need give me a justice.