NASA'S Annoucement

[Princess Turandot]

11. FWIW, per NASA's media page, the findings are under embargo by the journal Nature (until 1PM)...

so presumably, it involves a paper being published by them, relating to exoplanets. (As opposed to something scientists discovered last week.)

FYI For those who want to watch the 1PM news conference live online, there's coverage here: http://www.nasa.gov/nasatv
I assume that it will also be broadcast on their youtube tv channel: https://www.youtube.com/user/NASAtelevision/

They do a good job with these most of the time i.e. the scientists they have presenting the findings usually do so clearly for a not-too-technical audience.