Apple Seeds Third macOS Tahoe 26.4 Developer Beta

Apple has been moving through the macOS Tahoe 26.4 beta cycle for a few weeks, and the third developer beta is now out. This update lands about a week after Beta 2, and it gives developers another build to test apps, drivers, and workflows against the upcoming 26.4 release.

If you already run earlier 26.4 betas, this is the usual mid-cycle drop where Apple tightens stability, fixes bugs, and adjusts smaller behaviors that only show up once more people start testing. Today’s developer beta uses build number 25E5223i.

How to update

• Back up your Mac first, since beta installs can still break apps or settings.
• Open System Settings.
• Go to General and then Software Update.
• Select Beta Updates, then choose the macOS Developer Tahoe Beta option if you do not already have it selected.
• Download and install the update, then restart when prompted.

Changes in macOS Tahoe 26.4

Apple has already been shaping 26.4 around a few user-facing tweaks, and Beta 3 continues that same track rather than introducing a big headline feature set.

Here are the main changes tied to the 26.4 update so far:

• Charge Limit controls: 26.4 adds a Charge Limit option that lets you pick a maximum charge level between 80% and 100%, which helps if you prefer to keep the battery from sitting at 100% for long periods.
• Safari tab layout option: 26.4 brings back the Compact tab layout choice in Safari for people who want the tighter design.
• Ongoing fixes and polish: Beta 3 focuses on bug fixes and performance work as Apple prepares the update for a broader rollout.

If you spot a specific change in Beta 3, especially in Safari, battery behavior, or system stability, share what you’re seeing in the comments.