Amazon announced today that the Kindle Cloud Storage, as a distinct entity, is going away. Kindle users will now be able to find and manage their files in the Amazon Cloud Drive.
Kindle users will still have the same 5GB that Amazon gave us when they debuted Kindle Cloud Storage in September 2011, it's just going to be easier to use. All of a Kindle users existing documents will be transferred over, and in the future the new documents that readers save to the cloud with the Send to Kindle email feature will be saved in their original format.
Update: Here are a few more details. Your personal files will still be accessible from the Manage Your Kindle page, and if you want to send stuff to your Kindle you will still need to use the "Send to Kindle" tools. Uploading files to the Amazon Cloud Drive will not transfer them to your Kindle.
While this might be annoying, it's good news. At long last Amazon has decided to rationalize the storage space they give to Kindle users. By combining it with the Amazon Cloud Drive, Amazon is both simplifying the management issues and giving Kindle users a better suite of tools for managing their personal documents (the manage your kindle page is terrible, simply terrible).
I have wanted Amazon to do this ever since the Kindle Cloud Storage launched 2 years ago. It made far more sense to have one location for all of my files than to have to manage 2 separate clouds on Amazon's servers.
In fact, it makes so much sense that Google made a similar decision a while ago. When Google launched Google Drive in April 2012 that free 5GB space was separate from the 10GB of storage in my Gmail account, and it was merged with the Gmail space in May 2013 for a combined 15GB.
P.S. To learn more about sending documents, news, blogs, and other web articles to your Kindle, please visit www.amazon.com/sendtokindle
P.P.S. To learn more about Amazon Cloud Drive features and apps, please visit www.amazon.com/clouddrive/learnmore