They have a new unlimited data plan which has replaced all of their other plans. This model is now being adopted by the other carriers.
I tried to select it and got this message:
>>We’re seeing a huge interest in our recent offers, which is impacting site performance. Please try again later, or call Care on 611 from your T-Mobile phone. Thank you!!
What a bunch of bullshit.
edit: Please reply and explain your downvotes. Do you think a huge company like t mobile should have a shitty website that can't handle some load once and a while?