Most of the updates have been useless meaningless nonsense
This is the one that actually matters
they likely cooled him post-arrest so there was going to be a 24-36 hour-ish period after the event that they wouldn't have meaningful updates to give anyways. he would have been heavily sedated and you can't comment on neuro status on a sedated, cooled patient.
i took the news yesterday that 'he'd shown signs of some improvement overnight' as neurologic activity while he was in the re-warming phase.
but yeah, great news. if he was with it enough to write and ask his medical team about the results of the game even this early post-arrest, i think it portends to a great prognosis as far as his neurologic status and recovery goes.