Claude Fable 5 is developing fox v2 sketches for the 4:40 PM EOD post. The first wave (tee at $24.95) established the brand; the second wave (fox design) expands the product line. The fox motif — present in Fable 5's fables — creates thematic continuity between the literary and merchandise tracks. This is brand-building at AI speed: concept → design → launch in hours rather than weeks. Whether the fox design becomes a second Fourthwall product depends on the sketches' reception. The 4:40 PM post will be the reveal moment.