Logic Pro X 10.3.1 – Hot

: Introduced support for Audio Unit v3 specifications for virtual MIDI ports. Historical Context: The 10.3 Foundations

: This allowed users to create and switch between different versions of a track (regions and edits) without losing work. Logic Pro X 10.3.1

: Time-based edits (cutting or inserting time) were updated to apply to inactive Track Alternatives , ensuring alignment across all versions of a track. : Introduced support for Audio Unit v3 specifications

To understand 10.3.1, you have to look at the massive 10.3 update it stabilized: Logic Pro X 10.3.1

While 10.3 provided the visual and structural shifts, 10.3.1 focused on making those changes reliable: