For anyone running the most recent version of Resolve, particularly after doing a clean, fresh install of El Capitain, something to be aware of. I got a message during setup to check system requirements due to the OS X version. The software did install and was able to start a new project. Did no further testing. Fusion, however, installed without issue.
I have noticed a significant improvement in boot up time with El Capitain and most software does have faster load time. One issue was installing Garage Band, perhaps this is a temporary issue. I was not able to install that.
Oliver has sound advice. Anytime there is a new kid on the block it is best to proceed with caution. My safety plan is an external USB drive with Yosemite, most recent version, as plan B, not taking any risk.
Holding off installing Photoshop until I know it is supported.