AquaDome

In October Psyonix will release a new arena 'AquaDome'! AquaDome will be the first standard arena Psyonix has released since Utopia Coliseum. The AquaDome arena will be completely free for the current players. Besides that, the theme of the arena is based on the seven seas and the creatures beneath the waves.
Also added with AquaDome are two new Battle-Cars: Triton (a polished and futuristic submarine) and Proteus (a science/research vessel). The cars will be available for $2 each.

 

Nothing too special, but it looks cool I guess. Rumble was a better update