Lets play Video games also has a new Report detailing the devkits dimensions and port locations.
http://letsplayvideogames.com/2016/08/report-nx-handheld-dimensions-layout-info-lack-of-region-lock/#comment-1082
Appearently the devkit is 205x92x25 mm without controllers and 281x91x25 with them. The controllers attach to the device kind of like the old Apply lightning cable used to, with little hooks securing the connector.
They also state no region lock.
Edit: Those dimensions seem very wierd to me. with these Dimensions the NX with controllers attached would be bigger than the WiiU Gamepad in every dimension except for height.
In fact the version without the Controllers would have an additional 3 cm on each side of the sceen that seemingly get used for nothing (This is nt shown in any of the schemtic pictures we've seen so far).
Alternatively the screen is roughly 8x19 cm wich seems like a wierd size to me. I know it's supposed to be a dev kit, so it might not represent the final product in any way, but I find it curuois nonetheless.
