Okay, so what did we already know? We know the show will be 13 episodes, all dropping at the same time, telling a complete story and not stand-alone adventures. We know it doesn't share continuity with the new movies' Trek, but rather in the old timeline which spans a couple hundred years. We don't know WHEN in the timeline the show is set, but the rumor it would occur post-Undiscovered Country and pre-TNG has been denied by the showrunner. The rumor that this new Trek will be an anthology show à la Fargo or American Horror Story has NOT been denied, which would allow for the Discovery's story to be a tragic one. Like big successes such as Game of Thrones, I think they may be looking to thus make the show an unpredictable thrill ride where your favorite characters may get melted.
Placement on the timeline remains the big mystery. Just from the teaser, there are several competing elements that would put it in one category or the other.
First is the triangular design that, while not final according to the production team, is definitely based on that of the never-made Star Trek: Planet of the Titans, a 70s revival that would eventually become The Motion Picture. See?
Or would the ship number, NCC-1031 and thus commissioned BEFORE the Enterprise (NCC-1701, dontcha know) place it earlier than even Captain Pike's adventures? During the Daedalus-class era of exploration, perhaps? That bronze look certainly recalls the NX-01 Enterprise.
And then there's the feeling I can't shake, that between the triangular shape, red exhaust pipes, and exotic music, that this will be a Starfleet-Klingon combined crew. And when would THAT put the story? A secret mission early in the timeline? (With a secret base built in an asteroid.) Perhaps immediately after the Khitomer Accords despite the rumor's denial? Or sometime far even in TNG's future when the Empire has become part of the Federation, despite the retro designs? The latter is unlikely, but the former... And perhaps the music just means the Klingons (doesn't it sound Klingon to you?) are involved in the seasonal arc, but aren't in the crew. Food for thought.
And the reason I'm surprised the name didn't come up more often or more prominently is rooted in a personal story. When I was in 5th grade, French-language public schools were basically Catholic. We didn't go to Bible School or whatever, the catechism was integrated into elementary school. No choice. And the sacraments were given and explained as part of that curriculum. 5th grade was the year we had Confirmation (when, at 10 years old, you're expected to confirm your baptism with your own voice, like you're in any better a position to choose your faith than when you were a baby), and that's a big deal. To accompany you on that journey, it's a special year in school and the classroom becomes a ship on which all the kids are sailing towards that common goal. Each 5th-grade class in the school was christened with a ship's name, right there on the door, and the teacher would break out various boat-related activities (I remember making a Viking longboat). At the start of the year, the kids choose the name. The teacher asked us all to bring ideas to class, and I, already a grade-A geek, drew up a huge list of ship names pulled from history, fiction and comics. Stares from the room, some chuckles, waves of disdain. And so we ended up calling the class the Discovery (la Découverte), as it was called the Enterprise the year before, and then the year after. I think she was just alternating those two names and guiding the kids to those choices every year. If the Discovery was so obvious to Mrs. Grandmaison, why not to Trek writers. (End Geeks Anonymous meeting.)
So truth be told, we can't tell a whole lot from the teaser, but I AM intrigued. I have hope that with the format, TV Trek will be modernized to appeal to today's sensibilities, while catering to old fans with continuity plug-ins. Hm, that sounds like Enterprise, doesn't it? I'm sort of more hoping for New Frontier, actually.