Warner Brothers regularly holds test screenings at their lot in Hollywood. People get into these in various ways, and a couple of days ago they held a three-hour test screening of something. While some people claimed it was a New Line movie (and thus Black Adam), it's since come out that it wasn't a New Line movie and was actually Matt Reeves' The Batman. 
One person on Twitter CLAIMS to have a friend who was there (it's completely unverified right now), but Reddit has compiled everything they've said about it:
	
	
		
			
		
	
If true, it sounds amazing; especially the part about Batman narrating the whole movie. Both this and Doctor Strange 2 release in the same month and I'm looking forward to this a lot more.
				
			One person on Twitter CLAIMS to have a friend who was there (it's completely unverified right now), but Reddit has compiled everything they've said about it:
If true, it sounds amazing; especially the part about Batman narrating the whole movie. Both this and Doctor Strange 2 release in the same month and I'm looking forward to this a lot more.
 
	 
				 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
	 
	