Yesterday (February 18th) some travel companies claimed a”world exclusive” that the Mass Gasnes would take part on August 15th.
In fact a little known website Mass Games Guide announced on January 27th that the games would be happening on August 15th. See the news less as exclusive, and more as well timed for the media.
The only problem is that as of now, North Korea is currently closed (as many others are), due to the coronavirus, with even China enforcing quarantine.
For now it is a waiting game.