http://www.pcgamer.com/skyrim-is-getting-a-survival-mode-via-creation-club/

Bethesda has announced it will release a Survival Mode for Skyrim Creation Club, and while it hasn't released just yet, you can opt into the Steam beta right now. It's an appealing mod if you're keen on punishment: it adds hunger, fatigue and weather-oriented survival systems, and you can't fast travel either.

But it looks like the mod itself won't be free. According to the announcement, "both PC and console players will get Survival Mode free for one week once it launches on their preferred platform." While no price is specified, it does imply that you won't be able to subject yourself to this punishing mod unless you fork out.