We are currently working toward release (currently in extended beta) for a Xamarin Forms PCL project using 18.104.22.1686. I've always used the built-in mechanism to update to new stable versions, but am concerned about doing so this close to release.
Problem is that I need to start pushing the iOS version toward beta, but am currently experiencing issues connecting to the build server / XCode 7, so according to forum comments it appears I need to update.
I've had enough problems in the past with the stability of updates that I'd prefer to just update the iOS portion of the toolchain, and leave Android until after we're in general release. Is it possible to do so on a XF project? If so, any pointers for how to not hose it would be greatly appreciated.