Originally Posted by Duugu
Well, their UI is stored under \The Elder Scrolls Online\game\client\EsoUI\Ingame
There's an ingame.txt that contains all the lua and XML filenames + the path to them.
My guess is that it you have to add the path to the game directory, then add your addon to the ingame.txt and place a XML+lua file into your new addon folder. Something like that. I'm sure a bit of trial an error is enough to get it working. 
The basic API and XML structure is inside their ui files.
E: Just to be sure: I'm just speculating. I don't know or tried anything.  |
It's planned to be a different format before release it's like that for testing purposes.
I've heard nothing official BTW. I'll keep ya guys posted when I do (that's really all I'm allowed to tell you as well NDA's can be frustrating).
Kinda feels awesome to get paid to play games btw