Sony is releasing the YouTube app it promised would be coming to the PS Vita. The app will include a custom interface divided into small screen and full screen mode. Full screen mode will show the video along with standard controls and image quality options. Small screen mode, meanwhile, offers social features like commenting, Like and Dislike buttons, and suggested videos or history. The app can support playback up to 720p. Sony says YouTube will be available later today as a download on the PS Vita Store. Since the Vita's browser has pretty limited playback capability, this app adds functionality that we're sure will be much appreciated, and it comes on the heels of several other social tools, like Skype and Facebook.