...making an update describing the stages found in the Subspace Emissary. I mean, look at this screenshot:

This actually appeared outside of a Subspace Emissary update. Usually such things stick to such updates. I honestly thought this was a custom stage until I realised the level design couldn't have been that elaborate.
He's shown us Subspace enemies, movies, mechanics such as trophy stands, etc., yet he still hasn't shown off a list of stages found in the Subspace Emissary on the Dojo.
What's taking him so long?