The new beta can be (as usual) downloaded from the Renoise Backstage

More technical info: Api Changes + Fixes In 2.6 Beta 4

What's New
- more default OSC actions (Renoises default Osc message set). To see all available actions, open Renoises preferences pane, select the OSC pane.

Fixed Issues
- Bugs in scripts (never ending loops) should no longer be able to dead lock Renoise
- bunch of small issues here and there. All fixed issues are now tagged as "[Fixed B4]" in this forum.