Here is the list of new features and improvements from the release notes:
New Features

Vertical zoom.
Scrubbing.
Support for WavPack and Wave64 files.
Added a level meter.
Added the File/Analyze menu item to gather some info about the waveform.
Added the option to lock the channels together.
Ability to display times in SMPTE.
Uses the TimeCode reference from .wav and .aiff files.
It [...]