What has changed in macOS Sequoia 15.3?
The macOS 15.3 update introduces Genmoji creation in Messages and other apps on Apple silicon Macs, and improves notification summaries with an updated style and access from the Lock Screen (Apple silicon only). Notification summaries for News & Entertainment have been temporarily disabled while the engineers fix them. Those who don’t wish to use AI should ensure that they turn it off, as 15.3 now enables it by default when it’s supported.
Bugs fixed include improved stability for apps over VPN connections when using the built-in software firewall and content filter extensions, and successful AirPlay connections with the firewall and content filters. Brief release notes are here, and those for Enterprise are here. Security release notes are available here, and list 57 vulnerabilities, one of which is believed to have been actively exploited in iOS.
iBoot firmware on Apple silicon Macs is updated to version 11881.81.2, and T2 firmware to 2069.80.3.0.0 (iBridge: 22.16.13051.0.0,0). The macOS build number is 24D60, with kernel version 24.3.0.
Significant changes in bundled apps include:
Contacts, build increment
Freeform to version 3.3
News to version 10.2.1
Passwords to version 1.3
Photos, build increment
Safari to version 18.3 (20620.2.4.11.5)
Stocks version 7.1.1
Tips version 15.3.
Many of the usual public and private frameworks have build increments, particularly those involved in AI. However, this update appears to be more incremental bug-fixes and improvements, rather than anything more extensive or radical. Significant changes seen in /System/Library include:
In CoreServices, Paired Devices.app to version 6.4.0
Many AGX kernel extensions to version 324.6
APFS is updated to version 2317.81.2.
