Drew Fuller (Chris) is added to the opening credits.
This is the first time Phoebe is ever seen with a nose ring. She has it for the duration of the season, but not after that.
The Valkyries entry in The Book of Shadows reads, "A powerful race of demigoddesses who scout the battle grounds for dying Warriors, then take their souls to Valhalla where they prepare them for the final World battle".
Though Valkyries are warriors, Freja is a "Vane", a goddess of fertility and lust.