Square Enix will be releasing Final Fantasy XV: Episode Duscae‘s update on June 9th, according to the most recent Active Time Report video. If you are in Japan, the demo is available on June 5th.
In this new update, the developers have included new character events/animations during camp scenes and battles, an improved framerate, new abilities (such as a dodge roll and being able to team up with party members) and more additions.
Hajima Tabata, the director of Final Fantasy XV, has confirmed that Stella from previous Final Fantasy Versus XIII trailers will not be a character in Final Fantasy XV. Tabata has also said that Final Fantasy XV will not be making an appearance at E3, and instead will be shown at Gamescom in August.
Source: Square Enix YouTube Channel