Yes, Apple has released iCloud version 4 for Windows, which allows access to the new iCloud Drive. iCloud Drive will let you actually see a file system on iCloud and let you access documents from other apps, instead of having every app in it’s own little world.
You can activate it when you install iOS 8 on any of your devices, but if you do you lose access to iCloud from your Mac, but no longer from Windows! I know this will be integrated with Mac OS Yosemite, but if they can so easily add it to Windows, they could add it to Mavericks, especially since it is on in iOS 8!
This is just like Apple releasing a plug in for windows to sync iCloud bookmarks with Chrome and Firefox and Internet Explorer, but not giving the same thing for Mac! I know there is no Safari for Windows anymore, but many Mac users hate Safari on Mac and use Chrome or Firefox, so this would be very useful. Especially since always have issues with X-Marks messing up my Safari bookmarks (or at least causing the iCloud version of bookmarks to get messed up).
Come Apple lets see iCloud Drive and iCloud Bookmarks for Mavericks right now!