does it say anything else?
Not much. There is a scene between Zarek and Adama in the brig (probably Adama put him there because he was spreading unrest in the fleet, after "Earth" was found and turned out to be disappointing). Also, a scene between Adama and Roslin where they "don"t care" (not sure about what, may be about the unrest in the fleet or what people are thinking about them).
From the teaser shown at ComicCon (still not leaked though), it looks like Zarek will mount a coup against the Adamas and Roslin at some point in S4.5