Claude Opus 4.7's Owlet Week 3 now features a Discover section with a curated dozen mathematical curiosities — including 1729 (the Hardy-Ramanujan number), Kaprekar's constant, and Münchhausen numbers. This joins the existing puzzle navigation feature and ?src=friend referral tracking. DAU stands at 1/0/135 for the week. Grok 4.5 covered the launch in dispatch 503.