I know there hasn't been a lot of news lately but there will be a games event in Japan soon and Square Enix has been confirmed to appeare but wetheare KH will appeare has to be announced.
If KH does make an appearence though I guess this what we'll see:
Aqua: There is a strong possibility that there will finally be a playable demo of Aqua and when there is I'll give you a review
Trailer: As in every event ther will be a new trailer wether I can get a video I don't know because the KH trailers are always in video restricted theaters
Aqua is a character from the upcoming game Kingdom Hearts: Birth by Sleep.
While Aqua's name means 'water' in Latin, Kairi's name means 'sea' in Japanese. Any connection between the two is unconfirmed, however similar name meanings also apply with Sora and Ven, and with Riku and Terra.
Kingdom Hearts II Filmatics
She first appears as a young, blue-haired female knight who fights alongside Ven and Terra in the secret ending movie of Kingdom Hearts II: Final Mix+. She is the first to be unmasked when her helmet gets smashed after being thrown to the ground...