It would seem Sony is still engaged in the bizarre ritual of releasing a slightly tweaked version of its flagship smartphone every six months or so. The alleged Xperia Z4 has leaked repeatedly in recent days, and now it looks like T-Mobile might know something we don't. The carrier won't sell you a Z3 anymore, because apparently that phone is yesterday's news.

The Xperia Z3 only launched on T-Mobile In October 2014, and now it's not even listed on T-Mobile's website. T-Mobile's official Twitter account confirms matter-of-factly that the Z3 is no longer available for sale. That's especially odd considering the older Xperia Z1S and comparatively ancient Xperia Z (refurb) are still available for purchase.

So why would T-Mobile banish the Z3? It's possible the carrier will finally be launching a Sony phone close to its international availability. The Z4 is rumored to pack a Snapdragon 810 processor, 4GB of RAM, and a 5.2-inch LCD that comes in both 1440p and 1080p flavors. Of course, it looks exactly like previous Xperia phones on the outside (based on leaks).

It's also possible the leaks are not legit and T-Mobile pulled the Z3 for some other reason. We'll have to wait and see, but I feel like this does not bode well for future software support on T-Mobile's Z3 variant.