The fifth and final season of You're the Worst premieres on Wednesday, January 9th on FXX. The final season will consist of 13 episodes. The premiere is apparently up early on the FX streaming platform if you have access to that.
Critics have seen the entire final season and the reviews have been good so far:
Sepinwall said:The show has always been a delicate balancing act of cynicism and sincerity, and occasional stumbles this late into the process are inevitable. Some experiments work, like the way this week's premiere feels like a wild detour until it becomes clear how much it has to say about Gretchen and Jimmy's love story. (It's the show's best, funniest episode in quite some time.)
NY Mag said:What ultimately makes this season so meaningful and smart is its insistence on confronting the underlying, more dramatic issues with which the series has always wrestled.
RogerEbert.com said:The tightrope-walking of the final season--one that feels both deeply satisfying and yet totally true to its characters--is a thing of masterful beauty. As a whole, the season is funny, smart, and--sorry Jimmy & Gretchen--moving.
NYT said:Not all of this season's ideas are as successful. ... That's not a fatal flaw in this kind of high-concept comedy, however, as long as the writing is imaginative and the performances snap. And 13 weeks from now, the landing is indeed stuck, in a finale that answers the questions and satisfies the emotions without short-selling the serious issues.