Beat Saber is coming to the Oculus Quest, as confirmed by a tweet.
UPDATE: It has now been confirmed, with a Spring 2019 release date.
Hugo Barra, the VP of ARVR Product at Facebook, showed a tweet of an announcement coming at 8am PT today, and showing a clip of the game in action. The hand movements indicate that the game to be announced on the system is Beat Saber for the Oculus Quest. No further details are given.
Beat Saber is one of the most popular games in the VR ecosystem, credited with great controls and fun gameplay. More will be shown at GDC this week.