The 4.0.5 stable version contains critical bug fixes and version string improvements since the last release. The stable release version 4.0.5 is made from the stable 4.0 branch with bug fixes cherry picked from the development branch of KiCad.
KiCad binaries for Windows, OS X, and several GNU/Linux distributions can be found on the download page:
Please note that KiCad board files (.kicad_pcb) can be uploaded directly to our website:
Wayne also presented at FOSDEM 2016 back in March, but the audio and video quality is worse than the 2015 video.