Re: Call me jaded...
The difference with 3dxpoint is that it actually exists, and it exists in commercial quantities. STT-MRAM is still in the lab.
Right now there are hundreds of Intel and Micron partners who are working with real engineering samples of xPoint. Production of xPoint is proceeding and stocks are being built. Unfortunately, that isn't enough to get xpoint working.
If you really want xpoint to do anything you need to have chips and chipsets that work with it. You need those to enter the market. And you can't push those into the market until the current stuff is out of the channel.
3dxpoint isn't held up because the technology is pants. It's held up because the chips and chipsets that will ultimately use it have been delayed! Some of that delay is are the problems around the 10nm shrink, but a lot of the delays are due to the x86 market just being so ass that existing stock can't be cleared fast enough.
But xpoint does exist. It's out there in the hands of partners. The question is simply "when do plebians get it"? That answer is -------+++++++CARRIER LOST