Source: https://www.frontier.co.uk/careers or https://i.imgur.com/nsYJ5vy.png
In the Principal Animation Systems Programmer position you can see it being described:
There are some positions that are meant specifically for Elite, like the Principal Network Programmer, but most of them are flexible between all their games.
I don't know man, it'd be odd to begin programming ED II when the current one doesn't seem to be close to finished. IMO it refers to a new game that has little to do with ED, maybe a remasterization of another videogame.