I'm using iOS 8 beta 2 on my iPhone and Yosemite beta 2 on my Mac and I'm curious as to how iCloud Drive works in terms of how to access content. I noticed when I go to finder, there is a new folder in my Favorites called iCloud and when I click on that, it had a folder called Preview in there. I'm guessing that was for the Preview app. So if I add something to the Preview folder on iCloud from my Mac, where else can I see it? I also opened Keynote and then noticed a new Keynote folder popped up into the iCloud folder and that showed me my presentations that were stored in iCloud. I can also drag any file and just drop it into the top-level iCloud folder, but again, where I can access those files? Will they be releasing some iCloud Drive app for iDevices so that you can view the files like Dropbox or will it only work for specific apps and you can only store those files in those specific app folders? Also, why doesn't iCloud Photo Library show up in this iCloud folder? I know there is a Photos app coming next year, but it would be nice if I could just drag and drop files into my Photo Library from my Mac.