Geoff Keighley announced today on Twitter that another Game Festival would be hosted on Steam. It is currently scheduled to start on March 18th at 6pm central European time. It was originally set to coincide with this year's GDC, which was unfortunately cancelled due to safety concerns surrounding the Coronavirus outbreak.
The first Game Festival took place last December and was part of Geoff Keighley's video game awards show The Game Awards. Several awesome Linux demos were available to play at the time including CARRION and Spiritfarer.