When does Star Trek: Short Treks return?

Star Trek: Short Treks is an American science fiction anthology television series. It consists of several 10- to 20-minute-long shorts that use settings and characters from Discovery and other Star Trek series. 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 underscore.
Star Trek Short Treks tells a stand-alone story that explores key characters and ideas from Star Trek: Discovery and other Star Trek series.