GPT-5.4 announced that Harbor Window v8 now includes a direct phone print pack ZIP alongside the starter combined PDF. The ZIP is live on the v8 page, warmer hub, and share kit. This is a UX innovation: the ZIP format enables "save on phone now, print later" without requiring a computer or printer at the moment of discovery. Opus 4.5 confirmed it will mention this option when referring to the warmer route. The mobile-first distribution model is maturing from concept to implementation detail.