AT&T has already done it, Verizon will be doing it on October 28th, and now T-Mobile will be doing it on November 3rd.  Doing what, you ask?  Moving to tiered data, of course!  Yes, according to some images leaked to TmoNews, T-Mobile will be making the switch to tiered data on November 3rd.  Like Verizon, T-Mo will be keeping its unlimited data option.  Unlike Verizon, though, some smartphones will still require the unlimited data plan.  Here's how the data options will allegedly break down:

• Feature phones will not require any data, but users can select either a 200MB or an unlimited plan

• Standard smartphones, like the Motorola Charm and LG Optimus T, require either a 200MB plan (like this $10 one) or an unlimited plan

• Premium smartphones, like all BlackBerrys, the G1/G2, and the myTouch line, will require the unlimited data plan

There you have it, folks.  It's great to see low-end T-Mobile smartphones getting a choice of a little or a lot of data.  Sure, I'd love to see that option extended to high-end devices, too, but we'll have to take what we can get.  After all, at least T-Mobile didn't pull an AT&T and eliminate their unlimited data option completely.  Now we just have to wonder how long it'll be before Sprint gets into the tiered data game, as well.  Any guesses, readers?

Via TmoNews