US Cellular's shared data plan subscribers might be able to enjoy more data sometime soon. That'll be the case anyway, if the carrier's truly increasing its shared data subscribers' caps, as indicated by a leaked internal document unearthed by Droid Life. If the memo is legit, then the $40 shared plan will come with 1GB of data that triples the original 300MB, the $50 tier will come with a 2GB cap instead of 1GB and the $60 plan will net subscribers 3GB of data, up from 2GB. The company is reportedly bumping up current subscribers' data allotments automatically, though it's giving new customers the choice to sign up for an introductory 300MB tier for $15 a month. In addition to higher shared data caps, US Cellular is apparently going to launch a $60 single line plan with 1GB of data for a limited time.