Trailer for Ephraim and Dot has been released.
twitter.com
twitter.com
Incase the others don't play.
twitter.com
Nothing for the other one yet.

Star Trek on Twitter
“An unexpected encounter takes one tardigrade on a wild adventure through space. Star Trek: Short Treks "Ephraim and Dot," December 12th. #StarTrek #ShortTreks https://t.co/qvTU9xSdlt https://t.co/pz1744GK0k”

Star Trek on CBS All Access on Twitter
“One tardigrade, one robot, and a whole lot of action on the Enterprise. Take a trip through the original series in Star Trek: #ShortTreks "Ephraim and Dot" tomorrow on @CBSAllAccess. https://t.co/fXUjSP7gEb”
Incase the others don't play.

Trek Central on Twitter
“NEW Trailer for the Star Trek: Short Trek "Ephraim and Dot", releasing tomorrow on CBS All Access! #StarTrek #ShortTreks #StarTrekDiscovery https://t.co/bPZ6jvoxhw”
Nothing for the other one yet.