According to a Katie Sackoff Convention I found out the following spoilers:

1. The Colonial fleet will find earth through the eye of Jupitor,the Jupitor in our solar system is a worm hole.

2. Thrace is not a cylon.

3. President Rosolin is the final cylon.

4. Baltar is the cylon God.

5. The earth they find is very ancient earth at the time of Atlantians.

6. William Adama Will discover that our Earth used to be called Caprica. This has happened before and will happen again...

7. The Battlestar Galactica will be destroyed as well as the fleet.

8. Colonial Humanity, Atlanian Huminity and the cylons will be destroyed in Revelations.

9. The only survivors are the Hybrid humans.

10. All of us on earth today are part cylon, which will one day leave to find earth which was once called caprica...

11. Kara Thrace will find out she is a Lesbian.