Curiosity will be landing, or trying to land, at about 12:30 AM Central Time in the US. A press conference is in progress here, the panelist all opened by saying they’re having to remind themselves to breathe. I’ll be adding to this post throughout the day.
At a press conference today Richard Cook described what is planned. The deep space tracking network will be relaying real time communication with the rover, the first opportunity to hear from the vehicle is likely to be within seconds of landing. Shortly after 12:31 AM engineers will probably know if the landing was a success and there could be images returned a little after that time. On the next pass by an orbiter about two hours later images will probably be returned by the fish eye HazCam.