Quote Well like I mentioned above it should be coming by the end of Q1 so we should be seeing the SteamOS and OSX versions coming out very soon :)

Quote Sorry, I misspoke -- we're targeting Q2. Apologies for the mistake

Article taken from GamingOnLinux.com.

The time of waiting is nearly over, or so they say. A member of the Rocket League team mentioned on the Steam forum it will be due very soon at the end of Q1 2016.The developer meant to say Q2.I do hope they wait is really worth it. I've been wanting to play it a lot, and the online multiplayer is still very healthy right now so it would be a great game to have on Linux.It was originally due before the end of 2015 , then Valve caused a delay , so we have been waiting quite some time.Soccer meets driving once again in the long-awaited, physics-based multiplayer-focused sequel to Supersonic Acrobatic Rocket-Powered Battle-Cars! Choose a variety of high-flying vehicles equipped with huge rocket boosters to score amazing aerial goals and pull-off incredible game-changing saves!Are you still excited? My excitement has worn off a bit after so much waiting, but I imagine when it drops I will be very happy.