AT&T's data plan just got a lot more forgiving. Today, the company announced that starting January 25th, any AT&T customers in the Mobile Share Value system will be able to carry over unusued data to the next month. Since most users tends to fluctuate widely in data use from month to month, that will give users significantly more flexibility in data usage and a much better chance at avoiding overage fees. The Mobile Share plan already allows different users to share the same pool of data, so allowing the data to rollover will add an even larger buffer. "We’re saying thanks to our more than 50 million plus Mobile Share Value subscribers," said AT&T Mobility CEO Glenn Lurie.

The news comes on the heels of a similar announcement from T-Mobile, which unveiled its Data Stash plan just last month. "I think this is going to be something that's really going to shake up the industry," T-Mobile CEO John Legere said at the announcement. AT&T has also been making waves at CES, announcing on Monday that it will be the first carrier to support the WebRTC program.