Avalanche (Rage 2/Just Cause) job posting notes their "next set of titles" have multiplayer

[Nirolak]

People were suspicious that Rage 2 had multiplayer based on some scenes in the trailer, and it sounds like it probably does.

Presumably this would also be true of Just Cause 4, which we're pretty certain also exists.

SENIOR MULTIPLAYER PROGRAMMER

Avalanche Studios is the original creator of the award-winning Just Cause franchise (published by Square Enix), the developer of Mad Max (published by Warner Bros. Interactive Entertainment) and is currently working on Rage 2 (published by Bethesda Softworks), scheduled for release in 2019.

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The studio develops games using its proprietary Apex technology, enabling huge open worlds filled with emergent gameplay.

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Avalanche Studios Malmö is looking for a senior programmer to lead the multiplayer development of our newest open world / sandbox multiplayer game. We have a long history of creating some of the most immersive, playful and procedural game worlds in the industry. With our next set of titles we are bringing these worlds to life in multiplayer environments and this is where You come in.

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Source: http://avalanchestudios.com/careers/P_AAAAAADAAADCFdqh3I9G2M/

For reference, one of the scenes that made people think Rage 2 probably had online:

There's also a few with a caravan of vehicles.

 

[Falchion]

Multiplayer with Rage 2 feels like a necessity so I'm glad to hear that. I could see coop Just Cause 4 being awesome too.

 

[vypek]

With how receptive they were with the JC2 multiplayer mod it does seem like something they'd want to do on their own at some point. I guess it might be the NY team handling that if their next title is JC4 (which seems very likely).