A brand new expansion is coming to Subnautica as Below Zero will hit Early Access on PC.

This Wednesday, Below Zero – a free DLC – will offer an original map which explores the polar region.  This will also add a bunch of major upgrades as well as lots more content.

Below Zero is entering early access free as it is unfinished content and the purpose is for fans to comment and give feedback to help the game and content grow. Unknown Worlds are clear that there are bugs and it runs poorly, but

A console version is coming as well, though there is no timescale for that as yet.