Additionally, the carrier will start "Family Data Plans," which will let families on the same plan share data for a cheaper price just like they do with voice minutes and texts.
Adds a spokesperson:
I think it's safe to assume that at some point you are going to have mega-plans (for data) and people are going to share that mega-plan based on the number of devices within their family. That's just a logical progression.
AT&T's plans are currently $15 for 200MB and $25 for 2GB.