Apple has seeded the fourth developer beta of visionOS 26.4 for Apple Vision Pro, continuing its March testing cycle ahead of a wider release. The new build, listed as 23O5235a, arrived on March 9 and follows beta 3 from March 2, which suggests Apple is still moving quickly through bug fixes and feature tuning before the update ships more broadly.
At this stage, Apple still appears to be refining visionOS 26.4 rather than introducing a long list of brand-new user-facing additions. The update remains part of the same 26.4 beta series that has already brought support for foveated streaming, a feature designed to improve visual quality and reduce latency by focusing more streaming detail where the user is looking.
How to update visionOS 26.4
If you are a registered developer, you can install the update directly on Apple Vision Pro in a few quick steps:
- Open the Settings app
- Tap General
- Tap Software Update
- Choose the visionOS 26.4 Developer Beta
- Download and install the update
Apple lists the new beta on its developer releases page, where visionOS 26.4 beta 4 appears alongside the latest tvOS and watchOS beta updates released the same day.
Changes in visionOS 26.4
So far, the biggest known change tied to visionOS 26.4 is support for foveated streaming for apps and games. This matters because it can help developers deliver smoother cloud-based and streamed experiences on Vision Pro while keeping image quality high in the part of the display the user is actively viewing.
Beta 4 does not appear to come with a big public list of new front-facing features yet, which usually means Apple is focusing on performance, stability, and polishing work already introduced in earlier 26.4 betas. Apple’s developer release listing confirms the new beta is live, but detailed release note changes were not clearly surfaced in the public release index at the time of writing.
That makes this release more important for developers than for regular users right now, especially those testing apps, game streaming, and Vision Pro compatibility ahead of the final version. If Apple uncovers anything bigger in beta 4, it will likely become clearer as developers spend more time with the build.
Apple is clearly keeping the 26.4 cycle active, and this latest beta shows that visionOS updates are still moving at a steady pace. Let us know in the comments what you have spotted in visionOS 26.4 beta 4.
