Canonical has announced today shutting down the Ubuntu One cloud storage and music storage system. The company said that they cannot compete any more with other service providers giving away free 25-50 GB of storage. As a consequence further releases of Ubuntu, starting with 14.04 LTS, will not ship with the Ubuntu One file services.
However, as the blog post states
"The shutdown will not affect the Ubuntu One single sign on service, the Ubuntu One payment service, or the backend U1DB database service."
Important Dates to Keep in MindApril 02 2014: It is no longer possible to buy additional storage or music files
June 01 2014: Services will be unavailable (User data still available for download)
July 31 2014: All files left in the cloud will be deleted
Please read the official blogpost here: http://blog.canonical.com/2014/04/02/shutting-down-ubuntu-one-file-services/ for more information about the details.
Make sure to backup all the data you have in Ubuntu One file storage!