iCloud doesn't work with anything but Yosemite?

i just found this:

A note about iCloud Drive and iOS 8

When you upgrade to iOS 8, you will be prompted to upgrade to iCloud Drive. If you choose to upgrade, your iOS 8 devices can no longer transfer files to iOS 7 devices or Macs running OS X 10.9 or earlier. You should only upgrade to iCloud Drive if your Macs are running OS X 10.10 Yosemite, and your other iOS devices are on iOS 8.

well, it also will not upload anything from Pages etc to iCloud in Mavericks either! if true, this is worse than the 8.0.1, bending, and every other debacle Apple has had in the last couple of weeks. why bother with iCloud if you can't use it? Microsoft used to force you to buy new programs, OS's etc every time they did an upgrade...