Red for command, gold for operations, and blue for science and medical. The proven fact that the crew have modified uniforms so shortly after the tip of Season 3 might counsel a while has handed between Season 3 and Season 4. Or possibly everybody simply determined to put on brighter colours straight away.

A Cardassian President?
A brand new character addresses Burnham all through the trailer, and by the look of this individual’s face, they may have Cardassian ancestry! The character just isn’t named, nevertheless it’s very potential this individual is the president of the United Federation of Planets.

The return of the Ni’Var President, T’Rina
The Vulcan character T’Rina (Tara Rosling) could be very distinguished within the trailer, and at one level tells the brand new (possibly) Cardassian individual that she considers the Federation “more than allies.” This appears to counsel that the Vulcans/Romulans residing in Ni’Var could also be rejoining the Federation for good.

We additionally see T’Rina performing a mind-meld on Book later within the trailer, whereas Stamets watches. It’s fairly clear from the background that they’re on the floor of Ni’Var, too, the planet previously referred to as Vulcan.

Saru’s standing
In one shot of the trailer, we see Saru in a black tunic which appears to counsel that’s his official garb whereas engaged on Kaminar. (He stayed behind on his house planet within the season 3 finale.) But, within the background of one shot, you possibly can clearly see Saru standing behind Burnham on the bridge of the Discovery. He additionally seems to be sporting the identical spidery-looking insignia on his uniform that he wears whereas in his different outfit.

Also, within the final shot of the trailer, we’re cleary meant to suppose Saru and Burnham are holding one another’s fingers, and Saru’s sleeves are crimson. Will he keep in Starfleet? Unclear!