Dungeons are extremely rare in 21w06a

I explored 2 worlds with the new generation for at least an hour in spectator mode and found a total of 3 dungeons. One world was using the same seed as the world I play in normally and it looks as if the new generation makes it so dungeons are unable to spawn in where they once would be. 

 

This could make it extremely difficult for players to set up early game xp farms etc.