So why would a quad-core device be canceled or delayed before it ever hit the shelves? There are a number of theories in the works, all speculation, but potential reasons. T-Mobile could have never been pleased with its performance during testing and a solution was never created. HTC decided to back out of the device and put their focus into the new Windows phones that are launching with T-Mobile, or maybe T-Mobile just has other devices in the pipeline that would make releasing the One X+ a dumb move. Your guess is as good as mine.
At least we know this much for sure though, the device was going to T-Mobile and they were indeed testing it. Whether or not it ever makes it to consumers hands is a different story. It would have been nice to have a quad-core device on the Magenta network that wasn’t the Note II. Time will tell if this one, or one similar to it, makes its way public or not.