Definitely a sad omission. They're using the same Wales production studio from a quick search, so hopefully there's an update that he is still involved. But it looks like he did a four-part drama, the Damien Chazelle drama, and worked on Episode IX since he was announced for this, so maybe it all sidelined him.
But he seems to be a machine, so maybe it was finished ages ago, haha.
Yeah, still the same production company as when it was announced but no mention of the BBC or Thorne as in the 2016 announcement.
Dude is insane, stuff he wrote
in addition to what you mentioned: Wonder, an episode of Philip K. Dick's Electric Dreams, he's been announced as the screenwriter for
four upcoming films (The Aeronauts, The Secret Garden, Radioactive: Marie & Pierre Curie: A Tale of Love and Fallout, and a unnamed Yusra Mardini biopic),
and he's working on another TV series (The Virtues) with Shane Meadows (known for This is England)
lol. I had actually forgotten about the Curie film.
I really hope it's his version though. He's such a good writer.