Main new features in Renoise 2.6 are:

• Scripting: create powerful new Renoise features with Lua scripting
• Truly customizable bidirectional MIDI controller + OSC support with Duplex, thanks to scripting
• Sample Autoseeking, which will make large samples behave behave more like a traditional audio channel
• 64bit port for Linux
• DSSI support for Linux
• … and more

Check it out here!

Lua scripting, introduced as part of the beta cycle in July, has already resulted in a plethora of new tools, as well as native support for the following hardware: AlphaTrack, BCF-2000, BCR-2000, KONTROL49, FaderPort, microKONTROL, nanoKONTROL, Launchpad, Remote SL-MKII, Nocturn, Monome, Ohm64, iPad via TouchOSC… All created by the Renoise community on their own dime, just for the fun of it.