You can now download and install macOS 15.4 Sequoia RC 2 for the Mac right now with a new 24E247 build number.
macOS 15.4 Sequoia RC 2 Now Available for Download with Bug Fixes and Other Under-the-Hood Changes
Apple released the first RC build of macOS 15.4 this Monday. But today, the company is releasing the second one with a new build number.
If you already have the RC installed on your Mac, just launch System Settings, go to General, then click on Software Update. Let this page refresh, and the new RC will show up.
Click on Update Now in order to download it right away.
If you haven’t installed macOS Sequoia 15.4 RC yet, you can check out the entire tutorial posted here. It essentially involves signing up to the public beta program and then downloading the update over the air.
There are a bunch of things new with macOS 15.4, and you can learn more by going here.
But to keep things simple, you get the new Mail app that is powered by Apple Intelligence, which will sort your email into categories.
This very same Mail app is coming to iPad as well.
