Well, this is pretty big news. While the Xbox 360 had universal limited cloud storage for achievements and game data, the One is going to up the ante and give everybody infinite cloud storage, even without a Gold membership. The following statement was released by Microsoft:
"Xbox Live offers Xbox One unlimited storage space in the cloud for all Xbox Live members to store numerous types of Xbox Live content, including your profile, games, Achievements and entertainment. This content is stored and saved in the cloud so you can automatically access it anywhere, anytime, no matter where you are." — Microsoft
This is pretty big bonus to owning the console, and with the indie market being opened up, the Xbox One could be turning into a pretty big seller by the end of the year.