This is a project by a group of community members which was also involved in the Mark2 dual extrusion upgrade.
More precisely, it's me coming up with an outside the box approach / weird idea for a certain unresolved problem. Smart people like @gr5, @Anders Olsson, @Dim3nsioneer, @rooiejoris throwing in ideas and @tinkergnome who implants the stuff into firmware.
My impression of the current state of development when I started this was as follows. There have been filament monitor