Spoiler thread at TrekBBSYou have to sift through a bit to see what's been revealed, but here's an okay summary:
TEASER: inside a secret facility, two men (Paxton and Mercer) talk about a "patient" that's having some health problem that the monitoring equipment didn't detect because it wasn't calibrated for this "type" of patient. As they enter a Neonatal care unit, one of them check the bio-signs graphics on a wall and find that the fever's diminishing as the "patient" fights it off, while Paxton says it's good news for "both of them" in a threatening tone. As they leave, after implying "what she represents" is dangerous, the camera pans down to reveal the "patient" is a six-month old baby girl with vulcan pointed ears; but a small label on the glass reads "TUCKER".
ACT ONE SCENE 4: Ganner, a reporter (photographer) who's apparently interviewing the Enterprise crew during a conference, talks to Mayweather in a very personal tone, implying they were former lovers.
ACT ONE SCENE 13: Paxton talks to a miner who says his men will be "ready to move" at a moment's notice, and Paxton implies that he first needs to tie up a "loose end" referring to Mercer, the one who was monitoring the baby. This apparently happens in a ship on Earth's orbit, or in the moon. (They can see Earth from a window, but it doesn't seem to be on a ship)
Manny Coto talked about doing a series of episodes towards the end of the season that resolved around the politics of the 22nd Century Earth, and this appears to be it.