Apple today pushed users to beta 2 of macOS Catalina 10.15.4 Developer Preview, with an installation package size of 3.35GB.
This update includes a series of new features for Mac Catalyst, Apple Music, and Safari. Apple Music also supports real-time lyrics synchronization, which first appeared on the iPhone following iOS 13.
Endpoint security
new function
Custom Mach service names are now supported between apps and extensions.
Mac Catalyst
Resolved issues
DOM, keyboard events will now be dispatched as expected in the WKWeb view when the key is pressed or released.
Music
new function
Apple Music subscribers can now use the Music App that supports real-time lyrics synchronization.
Safari
new function
The Content Blocker extension provided with the Mac Catalyst application is now available in Safari.
