I had to read that up on Memory Beta. Certainly sounds like it, and by the way it was presented it will be one of the biggest incorporations of a literary plot device (sic) from the novelverse as I've ever known.
Other quick obeservations:
- Essof Four is a candidate planet because it's got "so much deuterium", again showing a pretty weird interpretation in Trek of what deuterium actually is and how it can power things.
- The zoom-in to the sickbay is notable for a few things. First, that for whatever reason, there's an opening protected by a forcefield close to the sickbay. One wonders if this is an actual vent, meant to be used quickly where simply flipping a switch would be easier than opening a manual barrier. Naturally, there ought to be a physical barrier as a backup. Since Discovery's had the shuttlebay open since the first episode of the series I don't see why they DON'T have this as well, plus we've seen from an episode of DS9 that sneaking in through an opening to the outside protected by a forcefield under normal operating circumstances is a precedent of sorts.
- Zooming back from the zoom-in, we get a look at one of the connecting spokes on the saucer where Burnham and Tilly may have been running before, or maybe the deck under it (if you believe that the spokes are really thin but two decks tall). It seems to have side windows, which begs the question of whether the various spokes are the same or if each one is different somehow.
- And I can't be sure, but the very last set of windows on the zoom-in shows a crew member NOT wearing any sort of blue window. I'm pretty sure they're NOT naked, but at this point in this show, some "Disney's The Rescuers" shenanigans wouldn't be out of character. :P
- Finally, the way the sickbay is oriented at the end of the zoom-in suggests that THIS examination room is only one deck below the bridge deck, and that the rabbit's tooth windows are not ALL facing the outside. They're apparently blacked out anyway, but I'm guessing that these rooms are suspended from the ship's internal latticework, and if they weren't blacked out you'd see worker bees or turbolifts zipping by.
- Uniform talk: Spock has been cleared of all charges and all that, but while Burnham slips back into her usual uniform, he stays in civvies (and even changes to a different overcoat, which he can't possibly have brought with him). Even if he's not technically returned from leave, I mean, SHOULDN'T he be back in uniform? The same goes for Culber, who is on at least limited duty here but still ends up in 21st century off the rack. Good thing Georgiou gets a fancy black version of the EVA suit to call her own.
Mark