Odd. The narrative makes it seem like the following chain of events:
They were working on some "tome of storytelling" for the holidays using some "magical tools" that were spirited away from them. They intend to continue looking for tools to craft that thing.
I don't know that this is something having to do with 5e. Maybe, but the description of a "tome of storytelling" leads me to the idea that it's more about inspirational material or somesuch? Trapdoor has a history of e-pub stuff (adds in e-books and the like). Hard to say what that is, but it doesn't seem tethered to gameplay, necessarily.
But that's all tea leaves. Not sure what to make out of "Newtonian the rogue," but that might be a hint, too.
Certainly curious at any rate!