As the rumor noise level has increased over the last few weeks, and LIGO has a press conference scheduled for tomorrow morning, everyone in the gravity community is expecting that LIGO will announce the first detection of gravitational waves.
A roundup of rumors can be found here and here and here and here.
Preprints with postdictions that sound as predictions can be found here for example. I’ve been told that the cat has been out of the bag for a while, and people with inside information have been posting papers to the arxiv in advance of the LIGO announcement.
Obviously this is very exciting and hopefully the announcement tomorrow will usher a new era of gravitational astronomy.