The new drive is known as the XP941 and Samsung will offer it in 128GB, 256GB, and 512GB configurations. It achieves read speeds of 1,400MB/s, which clocks it at 2.5x faster than a SATA SSD. It also only weighs 6 grams and measures 80 x 22mm. Samsung claims it only takes up a 7th of the space occupied by a typical 2.5-inch SSD.
http://www.geek.com/chips/samsung-starts-mass-producing-pcie-ssds-with-1400mbs-read-speeds-1559177/
We're going to need more slots.
At that small form factor, I have to believe there are significant power savings too. But yes - more slots. I need at least 1TB on any machine.
That's going to change a lot of my backup priorities. I could almost put everything into a phone sized device and carry my world around with me in my pocket. Unfortunately the 1st generation is bound to be pricey.