And the news? It's not good. At the end of Season 9, Episode 23: "Readiness Is All" Meredith went into labor. Earlier in the episode she'd been assured her baby was a-OK even after she took a tumble down the stairs, but this promo makes it seem like that's not so.
She needs a C-section, but because the power is going out that might not be possible. And the fact that she does need a C-section implies something has gone pretty wrong with the birth. Based on the preview she does give birth to the baby ... but he's not crying.