20210110

• 3D preview improvements:
  • Support displaying background videos and images from CH/PS format
  • Display MIDI measures:beats:ticks timestamp and practice sections
  • Fix some issues with animation smoothness and audio playback
• Add option for OGG Vorbis quality level to Preferences screen, which affects both RB .mogg and CH .ogg output
• Fix a bug that removed or incorrectly translated lanes on gravity blasts when importing from CH/PS format
• Fix CH and web player functions to use the Save File dialog with a default filename, instead of the less useful Save Folder dialog
• The Beatles: Rock Band custom songs (Xbox 360) import correctly
• Improvements to lipsync files: vowel diphthongs (RB3, TBRB) and consonant shapes (RB3)

20201121

• Preferences screen in menu:
  • Default folders for each output file type (RB, CH, Wii, web preview), used in Save File dialogs and to prefill batch template inputs
  • Antialiasing options for the 3D preview
  • Ability to disable Magma, intended for advanced users or those running newer macOS which does not support Wine
  • Toggle to always produce black VENUE tracks in RB files
• Read Expert+ extra kicks format in .chart files

20200822

• Fix some memory leaks caused by the single song window
• Read Pro Drums format from .chart files
• Fix a bug where lanes could be redrawn incorrectly when importing from PS/CH format
• Be more lenient when reading some spec-incorrect MIDI files
• Significantly faster REAPER project generation
• Draw lanes and BREs in 3D preview
• DTX import: better audio sample mixing, and a smarter algorithm for assigning cymbal colors
• Pass tuning cents to REAPER project VSTs

20200513

• Fix 3D preview not displaying in AMD graphics cards on Windows
• Fix a crash when auto reductions tried to handle more-than-3-note chords
• Make readme, license, and update history available from menu
• Include expert+.mid in CH/PS output

20200426

• A new primary way of using Onyx, the "single song view", with several new tools and capabilities:
  • A new in-app song preview tool, with 3D graphics
  • A tool to calculate RB3 star cutoffs for any set of instruments
  • Same conversion tools as batch mode (RB3, RB2, CH/PS)
  • Edit any of the song's metadata and turn individual instruments off (or redirect) before conversion
• New MIDI file parser, much faster and less memory-hungry
• RB MOGG audio to CH/PS format is significantly faster (previously was unnecessarily decoding multiple times)
• Fix "overlap" errors when vocal phrases are less than 1 beat long
• Fix errors with drum swells in Phase Shift songs, such as converts from GH
• Fix some character errors in metadata and lyrics
• Now available for Linux

20200223

• Fix invalid filenames being generated by output templates
• Tool to patch CON files to replace the VENUE track with a black background
• Tools to make .lipsync and .voc files from a vocal track
• Tools to extract .milo_xxx files to a folder, replace files, and repack them
• Fix parsing lyrics from .chart containing a quote character
• Prevent certain kinds of MIDI corruptions from causing errors (issue #137)
• Significantly speed up parsing track data from MIDI files
• Fix some lighting issues when converting RB2 venue tracks to RB3 format

20191216

• Fix an issue parsing *.c3 files when importing Magma projects
• Improved lipsync for English lyrics; now uses a few different vowel shapes by looking up lyric words in a pronunciation dictionary
• Add extra options to use a song's title, artist, album, or author in produced files/folders (PS/CH export uses "Artist - Title" by default)
• Fix Mac build which didn't bundle a required library correctly

20191024

• Fix a bug that caused occasional errors when generating CON files
• Generate MOGGs via a new much faster method, instead of Magma

I haven't tested it myself but is likely that macOS Catalina (10.15) does not support running Magma in Wine due to its lack of support for 32-bit programs. For this reason, I recommend Mac users stay on Mojave if you wish to create Rock Band CON files until a solution is found.

20190918

• Options to prevent importing specific instruments in batch window
• Add automatic drum animations to standalone MIDI reduction generator

20190914

• Fix CON names and descriptions getting truncated shorter than necessary
• Fix tap notes being written in a way that confused Clone Hero
• Fix RB2 CONs to use RB2 package thumbnail image
• Support importing 5-lane drums from .chart
• Web player: fix 5-fret solos that stopped being shown in 20190823
• Web player: show HOPOs in Keys track