The next Rocket League update is coming later this week on Wednesday, May 10th at 3pm PDT (6PM EST). Updates include a redesigned Neo Tokyo and Tokyo underpass as a standard arena. This redesign will allow the maps to be returned to all playlists including Competitive.

Redesigned NeoToko and Tokyo Underpass Arenas

Available as a limited-drop will be a new battle-car Mantis. Mantis will support full customization, low, flat hitbox and turn radius as the Batmobile.

New Battle-Car Mantis

The new Nitro Crate will include the Mantis Battle-Car, along with limited-drop wheels, decals, rocket trails, and black market customization.

Source: What’s Coming in v1.34 | Rocket League® – Official Site