Apple is laying the groundwork to make it easier for developers to distribute their apps across all of Apple’s platforms.

Included in Wednesday’s big batch of beta updates, Apple introduced a new option in Xcode 11.4 beta 1 for developers to build and test apps using a single bundle ID. Starting in March, iPhone users will be able to download an app via the iOS App Store and then (if the developer supports it) download it on other Apple platforms with ease.

This simple change might seem like an obvious added convenience for users, but it also sets up the App Store for some colossal changes over the next few years. It will force Apple developers to make some big decisions about their businesses.

The macOS Catalina public beta is here, so if you’re feeling brave, you can go ahead and install it on your Mac. But should you bother? Is early access to Project Catalyst apps, Voice Control, the Photos app redesign, Sidecar and Screen Time worth the risks?

Probably not. Or not yet, at least. But if you want to go ahead and install macOS Catalina on your Mac, here are a few tips and warnings.

You no longer have to be a registered Apple developer to get macOS Catalina on your Mac.

Apple seeded out the first public beta for macOS 10.15 this morning, just one week after the company released the second beta to developers.

Apple is working to bring new versions of Messages and Shortcuts to Mac, according to code discovered in the latest beta of macOS 10.15 Catalina.

The code was uncovered by developer Steve Troughton-Smith. This would be the first time Shortcuts is available on macOS devices. While Messages is currently on Mac, it looks to be getting a big overhaul.

The first four applications Apple ported from iOS to macOS Mojave last year met with a certain amount of criticism for feeling like they were still iPad software. An Apple executive has promised these will become more “Mac-like.”

Twitter recently promised to bring its iPad application to macOS, and the now the company says this will have Mac-specific features, like support for multiple, resizable windows

The re-release of this social-networking software one of the fruits of Project Catalyst, which enables iPad applications to be ported to Mac with relative ease.

The WWDC 2019 keynote came packed with exciting announcements.  As in past years, I ended up with four pages of drawings in my notebook. I sketched out the biggest new features coming to tvOS 13, iOS 13, macOS Catalina and watchOS 6. And then there’s the new Mac Pro and Pro Display XDR.

As seen in my first sketchnote, above, tvOS 13 adds multi-user support and support for Xbox One and PlayStation DualShock 4  game controllers for Apple Arcade. Meanwhile, watchOS 6 will bring an App Store directly to the Apple Watch, a new Noise app, and a new Cycle tracking app for women.

For a quick visual recap of the highlights  of the WWDC 2019 keynote, check out the rest of my sketchnotes below.