Today Apple releases iOS 8. As Macworld warns, you should wait before upgrading to iCloud Drive. To fully take advantage of iCloud Drive, in fact, you’ll also need OS X Yosemite. And Yosemite ships next month. 

I don’t know how many people are in the same situation as I am, but here’s my current Apple device breakdown:

• iPhone 4 — Cannot be upgraded to iOS 8. Will remain on iOS 7.
• iPad with Retina display (third generation) — Can be upgraded to iOS 8.
• Mid-2009 15-inch MacBook Pro — Can be upgraded to OS X Yosemite.

When OS X Yosemite ships, I’ll be able to use iCloud Drive only between the iPad and the Mac. The iPhone will be left out. This is of course an inconvenience, and I don’t know what I’m going to do. I’ll probably end up waiting to enable iCloud Drive until I have an iOS 8‑capable iPhone, and if that doesn’t happen in a reasonable time frame, I guess I’ll upgrade to iCloud Drive so that at least I’ll be able to sync stuff between the iPad and the Mac.

Pay attention to the following screen after installing iOS 8 (the image is taken from the Day One app Support Page and the developers’ annotations are really helpful):