Apparently, T-Mobile has plans to get rid of their unlimited data plans in the not-too-distant future. During a recent investor's call,T-Mobile CFO Braxton Carter, said the following,
"In regards to our unlimited promotion, it is a promotion, it’s very short time. We pivoted away from using unlimited as our primary promotion mechanism in the prior year and part of what we did with Binge On again was another substantial increase in the price of unlimited."
While that is hardly specific, it does hint at a near-future when T-Mobile users will not have unlimited data. Whether that will occur first for new customers before existing customers is also unknown at this time.
Source: TMoNews