macOS Sequoia 15.4 beta 2 is now available for developers. The new release is rolling out a little more than a week after beta 1 debuted. Heres what to expect.Apple Mail redesign is highlight of macOS 15.4 so farmacOS 15.4 beta 1 introduced a variety of changes and updates for the Mac.The headline feature is the redesigned Apple Mail app, which adds the inbox categorization and digest features that first debuted on iPhone in iOS 18.2. It works very similarly on the Mac.Apple also brought a new proximity pairing feature that enables setting up a Mac faster than before. By following the on-screen prompts in macOS 15.4, you can bring your iPhone nearby to transfer settings to the Mac automatically.macOS 15.4 beta 1 included a couple Apple Intelligence additions too:Image Playground now lets you create images using a Sketch styleMany new languages are now supported by Apple IntelligenceNow beta 2 is available, likely with some additional changes.Well keep you updated on any new features discovered in todays beta.One thing were not expecting is big upgrades to Siri, which originally had been rumored for inclusion in macOS 15.4 and iOS 18.4.Mark Gurman reported that those features are now planned for macOS 15.5 and iOS 18.5 with a May release date.Have you found anything new in macOS 15.4 beta 2? Let us know in the comments.Best Mac accessoriesAdd 9to5Mac to your Google News feed. FTC: We use income earning auto affiliate links. More.Youre reading 9to5Mac experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Dont know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel