Heads up, T-Mobile folk, because it looks like there's another promotion coming your way. A new image shared by TmoNews has revealed that T-Mobile is planning a family plan add-a-line sale that'll knock $5 off of the price of each eligible line until Jan. 2, 2014, bringing Value add-a-lines down to $0 while additional Classic lines will be $5. The leaked shot notes that the offer is only valid with family plans that share a limited bucket of minutes or with the 500 minute add-a-line option on Unlimited family plans. That means that additional lines with Unlimited minutes aren't eligible for a discount.

This promotion is open to both new and existing customers can take advantage of the offer, though they'll need to switch to a promotional Classic or Value Family plan to get the discount, which will also extend their contract. That's not likely something that most T-Mobile customers like to hear, but for subscribers that were thinking about adding some lines to a family plan sometime soon, this deal may be worth looking into. T-Mobile is expected to kick this promotion off on Feb. 13 and let it run through March 23, so you Magenta Army members have two days to rustle up some friends or family members to add to your plan.

Via TmoNews