When does Star Trek: Short Treks return?

Star Trek: Short Treks is an American science fiction anthology television series created by Bryan Fuller and Alex Kurtzman for the streaming service CBS All Access. The first four episodes aired from October 2018 to January 2019, between the first and second seasons of Discovery. The shorts were mostly produced by cast and crew members from Discovery, including composer Jeff Russo who provided an updated main title theme and original underscore. The series has received positive reviews and been nominated for several awards.
Star Trek Short Treks tells a stand-alone story that explores key characters and ideas from Star Trek: Discovery and other Star Trek series.