Logic Pro X for macOS and GarageBand for iOS have both been updated today. MacStories has a good rundown of the new features:
Logic Pro X 10.3 adds Touch Bar support to the app for the first time, implementing it in a number of ways. The Touch Bar can serve as an instrument, allowing users to tap out a drum beat or play a piano keyboard. Power users will appreciate the ability to keep some of their favorite controls on the Touch Bar, as it can be configured with different keyboard shortcuts to suit each person’s needs. There is also the option to navigate audio waveforms using the Touch Bar.