Skip to the 6 minute mark if you want the answer. If you want the spoiler, yes it's pentile.
https://www.youtube.com/watch?v=rhoyPn2_O0M&t=16s
Wow , I really hoped they finally figured it out. their last sRGB was on OG Moto X and failed. Blue pixels are used the most (especially for white) and therefore burn at faster rate. With on screen buttons and notification bar that wouldn't play out well as much as I they advanced their tech behind it.
VZW Moto X DE/N7