*** We have withdrawn the Duet 3 main board binaries in this release because of an unexpected and potentially damaging side-effect when M400 is used in a deployprobe.g or retractprobe.g file. Duet 2 and Duet Maestro builds are not affected. We expect to release 3.5.1 in the very near future. ***
This release brings major new features including support for multiple motion systems on Duet 3 main boards, greater flexibility in M291 dialogs with the user, support for array variables, input shaping for axes driven by CAN-connected expansion boards, and WPA-Enterprise support on WiFi-equipped boards. There are also many minor new features, feature improvements, and bug fixes. See https://github.com/Duet3D/RepRapFirmware/wiki/Changelog-RRF-3.x#reprapfirmware-350-stable-changes-since-346 for the important upgrade notes and the full change log.
Users of Duet with attached Single Board Computer should upgrade from the package server as usual. Users running in standalone mode, use the files here.