For those who've enabled dev mode for modified kexts (Trim enabler, continuity activation, etc.), is it safe to update as is or must I restore the original kexts first?
Since I never got a response to this, I took the plunge and ran the update using the downloadable image file. (worst case scenario would be to go into recovery and use terminal to re-enable dev mode)
Other than having to re-enable Continuity and Trim, no issues. So the update is safe as it does not re-enable Yosemite's kext verification mechanism.