The poster layout is Apple Wallet's full-bleed pass design: artwork fills the pass from edge to edge, with fields laid over and around it, closer to a small poster than to the classic banded card layout wallet passes launched with. It arrived in iOS 18 for event tickets and, in iOS 27, extended to other pass styles, bringing loyalty and membership passes the same visual language.
Technically, a poster pass is declared in pass.json alongside the classic layout, not instead of it. The event ticket variant opts in through a style preference plus an artwork image; the iOS 27 variant adds a poster block next to the classic block, with field content mirrored between the two. Devices that understand the poster layout render it; older devices fall back to the classic layout without the issuer doing anything. One pass, two renderings, graceful by construction.
The practical work is art direction. A poster pass lives or dies on its artwork: it needs an image designed for the pass shape, with room for the fields that overlay it, and it has to hold up on the lock screen and in a wallet stack, not just in a design tool. Programs that treat the artwork as a stretched logo get a worse pass than the classic layout would have given them.
Paired with featured actions, the poster layout is the clearest signal of where Apple is taking passes: from a static card in a stack toward a branded surface a member actually looks at. Programs that invest in the design collect that attention; the format itself is table stakes on current devices.