Thanks for posting this, I hadn't heard about the PinePhone at all. Very interesting price point ($149 for the 2GB version)!
I just hope they can get the UI smooth and responsive. All UIs of Linux phones I've used in the past (Ubuntu Touch, OpenMoko) had a laggy UI which made them unpleasant to use even if you disregard all the other usability issues. And it wasn't the hardware's fault. The same phone wasn't slow when using Android instead of Ubuntu Touch.
I'd rather have a more bland yet snappy UI than a lot of eye candy.