TRB, IA & Daddycool you may want to have a look at the other application at Newmarket that was objected against last year - Ref. No: 17/03102/REM.
I have just had a quick look and noticed a number of new documents have recently been uploaded to the application. A letter from the council asking for further information including re-examining the planning obligation for the community stadium and setting out deadlines and timescales. The additional information has been provided and uploaded, which seems to include how Yorkcourt think they can get around not building the community stadium.
It goes over my head a bit but the application is clearly still progressing although it is not clear unless you do a bit of digging....