Rocket League, the race car-football (soccer) game fusion, will receive a new update on Thursday, September 8th. One of the biggest components of the update is the included OS X and SteamOS (including Linux distributions) support. The update also comes with a new Rumble mode, updates to classic Rocket Trails, and other changes.

Regarding Mac and Linux support, the announcement reads:

“Yes, it's really happening! After several delays (and our sincerest apologies about that, btw), the SteamOS and Mac versions of the game will finally be available for download. An important thing to note, however, is that both versions are still considered “beta,” with a handful of known issues that we've detailed below.”

The current known issues are:

The correct store page for DLC purchased through the Showroom doesn't show up for Big Picture users. This is a Steam client-specific issue that Valve will be fixing in an upcoming patch.

There are occasional crashes when exiting from a match to the main menu.

The statues in Urban Central do not display correctly.

You may experience intermittent blurring issues.

(Mac Only) Xbox 360 controllers won't work. You will need a third-party driver solution to use them.

SteamOS is Valve's official Linux distribution that ships on partnering OEM devices. It is based on Debian and therefore the game should work on other Linux distributions too. While it may and should work on other Linux distributions, the Rocket League developers will only be supporting SteamOS officially during the beta period.

As for Mac users, the blog post says that a dedicated GPU is highly recommended and that older systems with integrated video cards may have issues running the game. Macs from 2013 onwards, however, should play the game without issues.

Source: Rocket League via OMG Ubuntu