It’s certainly not over. HT’s are to press ahead with legal action. I certainly think they have a case:

http://www.bbc.co.uk/news/education-19891352

Glenys Stacey remains in post for the time being and Ofqual have dug their heels in, vowing to defend the grade changes “rigorously”. I’m sure there’s still a lot to come out in the wash here.