The new Six (on the left) is the one with the new agenda (not sure what yet.) Baltar's internal Six I presume remains the same. She appears to be a channel to one of the powerful beings, possibly the Cylon God, which would be consistent with Baltar being a Cylon.

Of course since many other colonials have had channels to these beings -- Roslin with her visions, Starbuck and various oracles -- they can't all be the final Cylon so this channel is not enough of a clue.