REAPER 6.0 contains many under-the-hood optimizations and improvements, in addition to the many items listed in the full changelog.
As always, we will continue to introduce improvements, optimizations, fixes, and major new features throughout the version 6 release cycle.
New in Version 6
FX Plug-in Embedding:Embed small versions of some plug-ins into your tracks control and mixer panels, including ReaEQ, ReaFIR, ReaXcomp, graphical JSFX plug-ins, and more
MIDI CC Envelopes:Handle MIDI CC data as continuous data envelopes, rather than discrete events; create smooth, musical articulations and effects
Auto-stretch Timebase:Automatically stretch and reconform audio around complex tempo changes; easily work with tempo-mapped and live-played recordings together
Routing Diagram:View and edit project routing using a high-level graphical patchbay emulation
Retina/HiDPI:Automatic rendering to HiDPI and Retina displays; new Default 6 theme supports 100%, 150% and 200% natively
Big Project Improvements:Vastly optimized behavior for projects with high (200+) track counts; Metal display support for massively faster screen drawing on newer macOS displays
..and More:New theme with extensive customizability via Tweaker script; Dynamic Split improvements; import and render media with embedded transient information; per-track positive or negative playback offset; faster and higher quality samplerate conversion; and many other fixes and improvements