Today at 6PM PST, Sony held its E3 2013 press conference. Here, Sony showed off the PlayStation 4. Kingdom Hearts III was officially announced. Series director Tetsuya Nomura appeared via a video and showed a short, beta trailer for Kingdom Hearts III which is "now in development" for the PlayStation 4 (Update: and Xbox One). Details about release date are currently unknown.
This trailer can be seen below, on YouTube. Enjoy! Kingdom Hearts III is finally on the way!
The trailer starts by showing all of the previous Kingdom Hearts titles to date. Next, Sora is shown on Destiny Islands finding Master Eraqus' Keyblade. The Kingdom Hearts III game logo is shown. Lastly, Sora is shown in Twilight Town fighting a wave/storm of Shadow Heartless. Donald and Goofy are party members.
Here is the Kingdom Hearts III game logo:
Update 1: IGN have uploaded a summary video for the Kingdom Hearts III announcement. In this, they reveal that "according to Tetsuya Nomura, the game began development in 2010, after the release of Birth by Sleep". This is interesting news, as it means development was started up to 3 years ago!
Update 2: mbdamiani and Nova_Crystallis from Twitter have shared photos of a Kingdom Hearts III poster at E3 2013. This poster is from Square Enix's private conference, "Square Enix: The Future", which is about to go underway. It is likely that this event could reveal more details about Kingdom Hearts III, so stay tuned. The poster can be seen below. We will update you on details from this conference live, here.