Apple has seeded the first developer betas of watchOS 26.3, tvOS 26.3, and visionOS 26.3 for testing. These releases arrive alongside the first beta of iOS 26.3 and iPadOS 26.3, launching the next development cycle across Apple's platforms.
The build numbers for the new software are 23S5586d for watchOS, 23K5585c for tvOS, and 23N5588c for visionOS.
These betas follow the public release of version 26.2 last week, which brought significant feature updates. watchOS 26.2 introduced Enhanced Safety Alerts for natural disasters, while tvOS 26.2 added support for guest profiles without an Apple ID. The visionOS 26.2 update expanded Travel Mode to work in cars and buses.
We are currently digging into these new builds to see what improvements Apple has in store. Given the version number, we expect a mix of bug fixes and stability enhancements, though new features could still appear.
Developers can download the new software from the link below or by using Software Update and enabling Beta Updates.