Have installed 10.9 DP in a VM (VMWare) but haven't been brave enough to sign into iCloud in case it changes something that impact on my other installs running 10.8.4. Anyone know if this is ok?
My concern was with the new iCloud functionality changing something in "the cloud" that would then impact on other devices running older i/OS. After sleeping on it decided this wouldn't be the case and signed in on 10.9.