New Features
Effects and Analysis:

* VST Effects now display GUI by default
* Faster Equalization and Noise Removal; improved Truncate Silence and Click Track
* Chains applied to files now clear temporary data after processing each file
* Updated Nyquist implementation with support for SAL syntax and improved memory management
* Plot Spectrum now analyzes up to 237.8 seconds of audio, with separate windows for each project and improved display; new preferences for Spectrograms
* Contrast Analysis tool now modeless for easier use

Interface:

* Draft Manual/Quick Help included in Windows and Mac installers
* New "Mixer Board" view with per-track VU meters
* Mute, solo, gain, pan and track height saved in projects
* More compact Preferences window with easier-to-use Keyboard tab and new toolbars shortcuts
* New Screenshot Tools and improved screen reader support

Other:

* Record more than 16 channels (hardware/drivers permitting)
* Improved support for non-mmap ALSA devices such as PulseAudio
* 32-bit float data over 0 dB now handled without clipping
* "Stop" option when importing preserves already imported data
* AMR NB export now supported if the optional FFmpeg library is installed
* Faster waveform drawing and better response in multi-track projects

Bug fixes for:

* Export Multiple: failed if empty label encountered; files silenced if overwriting imported WAV files without copying them in
* Metadata Editor hidden if it was on a now unavailable second monitor
* Misaligned audio after "Split New" or Noise Removal effect
* Incorrect label movement and paste with linked audio and label tracks
* Equalization, Cut Preview and Advanced Mixing Options dialogue
* (Linux) Mixer Toolbar should now adjust levels and select input sources properly
* "Audio cache" preference caused crashes - data is now only cached in memory if available RAM is above a level defined in preferences
* Various other crashes