REAPER 6.37 (64-bit)

What's new in this version:

ReaLimit:
- add new program-dependent brickwall limiter plugin
- support embedded UI
- support up to 64 channels, optional multi-mono and multi-stereo modes

ReaPlugs:
- most built-in plug-ins now support multichannel/multi-mono/multi-stereo modes

FX:
- support delta solo (difference between dry and wet signal) for VST, LV2, AU, JSFX
- enable delta solo via alt+click or right-click on wet/dry knob, or I/O menu in pin connector dialog
- add action to toggle delta solo for last focused fx
- show FX shortcut actions in action list even when FX is not available
- fix "only when selected/focused/visible" preference when using controller soft takeover

FX pin connector:
- change track channel count via dropdown, rather than +/- buttons
- support changing plug-in channel count, mulit-mono, multi-stereo configuration for ReaFX that support it
- support configuring requested VST3 bus size

JSFX:
- fix loudness meter peak value display for certain channel counts
- improve Oscilloscope scrolling smoothness
- increase Oscilloscope maximum view length to 5s
- Loudness Meter integrated values (LUFS-I, LRA, RMS-I) only update when playing back
- support regular peak (in addition to true peak) metering in Loudness Meter
- update Flanger preset

ReaScript:
- add MIDIEditor_EnumTakes()
- add TakeFX/TrackFX_GetParamIdent/GetParamFromIdent
- ensure envelope point shape input is valid
- for Lua, make final string parameter to various Get functions that return strings optional
- MIDIEditor_GetTake and MIDIEditor_EnumTakes return nil if the MIDI editor is empty
- Track/TakeFX_GetNamedConfigParm() can retrieve fx_name, fx_type, fx_ident

VST:
- fix initializing pin connector when plugin I/O increases
- improve hard-reset behavior when used with plugins that only support soft-reset
- improve naming of unnamed programs
- improve program handling when loading state for plugins that support chunks (e.g. Maize Sample Player)
- improve support for VST2 plug-ins that do not support effGetProgramNameIndexed
- run preset loading synchronously with audio processing

Actions:
- duplicate selected items obeys item grouping, creates new groups when originals are grouped
- fix quirks with 'Expand selected track height, minimize others' action and mouse mapping
- update solo button after MIDI CC solo state action
- fix some soft-takeover corner cases for midi CC actions

LV2:
- fix creating shortcuts to plug-ins via FX browser/script
- improve support for localized plug-ins, use LANGUAGE environment variable to choose language for plug-in, parameter, and preset names
- notify UIs when time:beatsPerMinute or core:freeWheeling parameter changes occur
- support pin connector dialog I/O menu option to zero out unmapped channels

Media explorer:
- inform user if maximum number of user-customized metadata columns has been added
- localize dialog to add user metadata column
- remember original playback start position when stopping (not pausing) preview, restart playback from that position
- when selecting new media, if both autoplay and show peaks for selected media are disabled, previous playback will continue

MIDI editor:
- add custom note order/visiblity mode (ctrl+drag note key in named notes view)
- do not quantize behavior of "drawing or selecting a note sets new note length" preference
- import/export of note names includes custom-view ordering information if set
- obey option for Preferences/Keyboard/alt key to main menu on Windows

ReaVerb:
- add Channel Tool to allow combining multiple files by channel
- support up to 64 channel impulses
- load channel count configuration from presets
- reverse impulse modifier can apply to all channels or single channel

Render:
- add brickwall limiter option
- add support for renaming render presets
- display gain reduction in render peaks display when limiting
- fix peaks display with very short files
- report rendered file length, full file path in HTML render statistics

VU meters:
- don't show clip indicators for not-soloed tracks
- consistent rounding and clip indicator behavior across all peak metering
- display overs if record-input signal is >= +0dB, or playback signal is > +0dB
- improve appearance when using DPI-mapping
- fix RMS calculation with certain sample rates

Audio Units:
- preserve input audio for instrument plugins (same behavior as VST and LV2 instrument plugins)
- fix creating shortcuts to renamed plug-ins via FX browser
- support IO menu in pin connector dialog

Batch converter:
- add brickwall limiter option
- prevent occasional incomplete normalization with very short files

Envelopes:
- add advanced project preference (default enabled) to prevent bezier envelope segments from being affected by preceding/following non-bezier points
- correct invalid envelope point shape data when loading project (protect against buggy scripts or extensions)
- fix potential odd behavior when editing FX parameter envelopes with inverted range

FX browser:
- display error when FX shortcut creation fails
- improve behavior adding to folders when using search
- scan for new LV2 plug-ins when refreshing list via F5

Linux:
- allow mousewheel to scroll menus/combobox lists
- improve appearance of menus and list/tree views

MIDI:
- reset CC/pitch on playback stop is now enabled by default
- fix processing sysex messages when the terminating byte is a standalone packet

Razor edit:
- allow pressing copy modifier key after mousedown, but before initial mouse move
- fix envelope edits affecting automation items incorrectly

ReaEQ:
- support various channel metering options
- support up to 64 channels
- update display after resizing when not processing audio

ReaFIR:
- support up to 64 channels, optional multi-mono and multi-stereo modes
- support various channel metering options

Automation items:
- fix possible hang on linux/i686

macOS:
- fix Big Sur save dialog behavior when exporting to project types other than .RPP

Pan:
- improve rounding behavior when adjusted via control surfaces/actions

Project bay:
- read source file attributes from cache if possible, to improve loading time for bays that contain many retained files

ReaComp:
- support up to 64 channels, optional multi-mono and multi-stereo modes

ReaGate:
- support up to 64 channels, optional multi-mono and multi-stereo modes

ReaSurround:
- update I/O size immediately when changing speaker configurations while bypassed

ReaXcomp:
- support up to 64 channels, optional multi-mono and multi-stereo modes

Recording:
- improve recording behavior with time selection autopunch and PDC

Theme:
- fix display of 200% layouts on retina displays

Track panels:
- improve behavior of FX parameter knobs for toggle parameters

Transport:
- fix issues with docked/undocked transport and screensets

Video:
- fix gfx_deltablit documentation

API:
- improve resolution and remove center-snap logic from CSurf_OnPanChange*() and CSurf_OnWidthChange*()