[forge-dev] sblanc's video?

I was watching https://vimeo.com/65672198 which unfortunately is very lowres so can't see the details. In here it looks like there is a config.yml file of some sort - is this a new kind of configuration we got ? Is it related to forge preference model in any way ? it currently does not look like that...but can't tell - sblanc, could you upload a higher res video ? :) /max