Really impressed with it after installing. Everything seems smoother. One of the most noticable things was on 10.11.5 & earlier builds, the cursor would freeze straight after coming out of sleep mode and the machine would be completely unresponsive for about 10 seconds (15" 2012 cMBP, SSD). Even with hard disk sleep disabled and sleep mode disabled. On the new build, it wakes immediately and is responsive without any real issues. Really, really impressed with it. Count me a happy Mac user! What are your thoughts?