The new game from the Marvelous AQL and the Rune Factory team is Forbidden Magna.
Update: Find more details here!
Famitsu magazine revealed the title, which is a strategy RPG for Nintendo 3DS. Lux is the protagonist. The girl with the pink hair is Charlotte. Diana is the girl with purple hair and Beatrice is wearing blue.
More details about Forbidden Magna should be coming later today.