It’s a pretty small update - the project is still in the very early stages:
And last week at the premiere when pressed on their progress, Kurtzman confirmed he had “not yet” seen scripts, noting “They’re just breaking story.” The executive producer also said he speaks to them about the project regularly, adding “I mean, I adore both of them so much, they’re so fantastic, and I trust them a lot.”
From a structural standpoint, it seems like a good way to have a rotating cast of guest stars while still having an ongoing mystery for the leads to explore.