World of Goo 2 from Tomorrow Corporation and 2DBOY has a Steam release date just revealed of April 25, which will include Native Linux support. No longer exclusive to the Epic Store and their direct downloads.
The Steam release comes with "three extremely challenging new levels, designed especially for the most clever, the most hardcore, the most goo-imbued players. (Even some of the development team have been unable to complete the new levels)". Additionally there will be a bunch of new achievements, a new options menu they joked that has "Never before included in a 2DBOY or Tomorrow Corporation game" along with bug fixes.

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More about it:
Discover realistic, flowing, viscous liquid. Control its flow like a river, convert it into Goo Balls, extinguish fires, and solve puzzles.
WHAT STRANGE NEW CREATURES!
Discover new species of Goo: Jelly Goo, Liquid Launchers, Growing Goo, Shrinking Goo, Explosive Goo, and more. All with mysterious new properties.
IT SOUNDS LIKE…
World of Goo 2 has dozens of new musical tracks in a beautiful and haunting new soundtrack.
WELCOME TO…
A thrilling new story to explore over the course of 5 new chapters, bursting with over 60 new levels, each featuring additional challenges.
YOU ARE NOT ALONE...
A powerful company has re-branded as an environmentally friendly, sustainable, green, clean, Goo processing non-profit. Help them collect as much Goo as possible. But what do they really want? Explore a new story spanning hundreds of thousands of years and watch the world change.
LET’S SEE WHAT HAPPENS THIS TIME.
Be careful! The world is beautiful, but it is dangerous. Guide as many Goo Balls into the exit pipe of each area as you can. ...but what's on the other end of the pipe?
They've confirmed they plan to give Steam keys for direct purchases.
Cool!
I got so add... used to Steam, which I used to boycott like 15 years ago... X)
However, it has hard-crashed my system (Kubuntu, X11, AMD) a few times so I will wait for the Steam version. Games seem to get updated more frequently on Steam.
It has been very good so far.
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