Okay, this is weird. I have the Yosemite Public Beta installed on my Mac. I am not a IOS 8 Beta tester. I was just accessing Pages on my IOS 7 iPad and it asked me if I would like to convert to iCloud Drive. I said yes and my files from my Mac appeared on my iPad. The message also said to sync my files across all platforms I would need to upgrade to IOS 8. Strange. I didn't think iCloud Drive files would work with IOS 7. I got the same message in Numbers.