I'm trying to find the most cost effective, upgradeable, feature-rich, etc. light & thin laptop. I figured I'd give the Asus a try even though it's heavier and thicker than the Samsung Series 9 because 1. I was curious what such high resolution would look like on a 13" and 2. I really liked the original Zenbook (except for keyboard + RAM limitations).
Here are photos of the innards of the new Zenbook Prime. As you can see the SSD is not normal mSata, and the RAM is nowhere to be seen, likely soldered on the underside of the board. Both attributes make this one hell of a tough machine to upgrade.