spiregrain
It's this monster - https://strule.org/app/uploads/2018/11/Plans-Masterplan.pdf

Delayed until 2022, according to this 2018 piece - https://www.bbc.co.uk/news/uk-northern-ireland-44526098

So I've deleted the internal roas - evidenced by Maxar imagery, and marked the rough site boundary as proposed:amenity=school.   (though there will be half a dozen schools if the project is fully realised).

The building under the note is the Arvalee School, which is up and running, COVID permitting.