Hi MMM_dg
I am not with Laminar Research,
The current official release version is 11.05 for everybody
Version 11.10 (eleven point ten) is still in the development (beta) stage for flight simmers to test. I understand that the change from 11.05 to 11.10 is and will be significant. If you want to stay with a stable situation stay with 11.05 until the official release. When? Who knows?
A word of warning. As you have indicated you are a Mac user don't venture to upgrade to High Sierra. The Mac team need to talk to Laminar Research regarding an operational problem. Until they do you will have problems running X-Plane on your system if you change.
Glenn