Over at HowardForums, several users on T-Mobile's $70 monthly prepaid plan have reported receiving texts from T-Mobile saying:
"Free T-Mobile Msg: Congrats, we are upgrading your plan to have unlimited web at no additional cost. Questions? Visit www.t-mobile.com/web70.aspx"
The the link takes you to a page (image above) that says;
"Good news— on May 22 we’re upgrading your monthly plan to include unlimited high-speed Internet access, at no additional cost to you!There's a similar page at www.t-mobile.com/web50.aspx (image below) that's apparently for user's on the $50 plan, which currently provides unlimted text and talk and 100 MB of data. The wording on the $50 page is similar except for the line: "Unlimited Talk, Unlimited Text, and Unlimited Web access (first 100 MB at up to 4G speeds)".
Your monthly plan will include Unlimited Talk, Unlimited Text, and Unlimited High Speed Internet access, so you can enjoy up to 4G speeds for:
Video and music streaming
I take this to mean that the $70 plan is getting "unlimited" data, presumably throttled to Edge speeds (100-200 Kbits/sec) after 5GB
Great news for users and it should help T-Mobile prepaid to better compete with Boost, Virgin's and Straight Talk's unlimited data offerings