http://reaper.fm/download.php#whatsnew
Video
massive improvements to video support
allow user configurable video decoder priorities with per-file-extension controls
configurable video output display latency
dockable video window
per-source option to not decode audio for video files
pooled audio decoders, reducing RAM use for heavily edited videos
project framerate is used instead of media framerate to determine display timing
projects can now specify preferred video width/height/colorspace, resizing options
real-time programmable (EEL) effect processors insertable as track and item FX
support for AVFoundation video encoding/decoding on OSX 10.7+
FX
per-take FX automation and MIDI learn support
browser smart folders (filter-folders)
browser options to view JSFX by description and/or filename
support for parameters with inverted ranges
VST3 support, including sample-accurate automation
inform VST plug-ins of offline rendering state, by default
duplicating Take FX copies channel counts
user-adjustable parameter modulation LFO phase
Media Explorer
added option 'Play through selected track'
search in subfolders
improved accessibility/tabbing navigation
fixed various UTF-8 issues on Windows ..
fixed issues when using preserve-pitch and tempo-match options
fixed MIDI/OSC action binding
ReaScript
integrated development environment (IDE) for running, editing, debugging scripts
IDE supports syntax highlighting, multiple editing panes, watch lists, structure matching, and more
integrated Lua 5.3 scripting support
EEL and Lua scripts can query various information (incl. MIDI/OSC input values) via get_action_context()
EEL/Lua graphics/UI API (gfx*) extensions
toggle state support (script toolbar buttons can have on/off states)
Automation
increased automation recording speed by 3x
internal changes and performance improvements to FX parameter automation
more consistent behavior when changing FX preset
new volume envelope mode that mimics track fader scaling
JSFX
sample-accurate automation support
added support for inverted slider ranges
editor improvements (scrollbars, multiple editing panes, Ctrl+Mousewheel font size change)
fixed potential crash from gfx_circle() with bad parameters .
Multichannel media
support Ambisonic WAVE_FORMAT_EXTENSIBLE .wav files
improved zero crossing navigation
improved tab-to-transient behavior
improved support for chained OGG Vorbis files
Default theme
extra fancy new theme
many layout choices for different uses (small, large, meters, live recording, media, item)
better track panel and item tinting appearance
Localization
language packs can specify scale for dialog windows using (for example) 5CA1E00000000000=xsc ysc
all codec (wav, video, mp3, etc) dialog boxes and related strings can now be translated
new template LangPack
Metronome
configurable beat patterns
improved count-in behavior/quality
MIDI
do not automatically enable MIDI vol/pan faders when creating MIDI-only sends/receives .
note-off velocity support in piano roll and list view editors
MIDI editor
added mouse modifiers to edit note edges ignoring selection
changed default note edge mouse modifiers to match default media item edge modifiers
optionally display project tempo and time signature markers in the ruler
Performance
updated default worker thread scheduling logic for lower CPU use
disabled anticipative FX processing on tracks with open MIDI editors, by default
automatically disable anticipative FX in routed-to tracks for open MIDI editors
Project Bay
new tab for managing FX parameter envelopes, modulation, and MIDI learn
fixed replace FX in project .
fixed source/item/fx deletion and undo issues .
ReaPlugs
improved touch-automation behavior for various check/combo/edit controls
improved ReaInsert behavior in many real world scenarios (PDC, looping, heavy load)
Ruler
improved display for frame grid and HH:MM:SS:FF
absolute frames time display mode
Theming
added theme tweak window (and removed outdated preferences pane)
improved theme color tinting support (requires 'version 5' in rtconfig, themes can override tint/peaks preferences via rtconfig 'tinttcp' and 'peaksedges')
scrollbar_2 and scrollbar_3 images can override scrollbar images for arrange and MIDI editor respectively
Time Map
better behavior when changing time signatures
improved behavior when inserting/removing time in project (fixed auto-create of new time signature markers)
improved time signature behavior when moving/copying regions
Undo
options to include envelope point selection in undo state
improved FX envelope undo behavior
Actions
added propagate take and propagate item actions
ASIO
support for up to 512 channels of input and output
Configuration import/export
optionally include media explorer databases
EDL
support for VIDEO media type in Vegas EDL TXT
Mouse
ignore mouse wheel on all faders, by default
Opus support
full decode/encode support for OGG Opus files
Ripple editing
removing time in one-track and all-track mode better respects timebase:beats preferences for markers, items, and envelopes
Stretch Markers
improved behavior when changing tempo map/moving items across tempo maps
Toolbars
up to 16 general and 8 MIDI toolbars
Track grouping
VCA slave track group setting
Windows
fixed color picker potentially appearing offscreen
API
added Envelope, Tempo Map, Project Extension State, improved MIDI and Toolbar APIs
