Square Enix released the details for Final Fantasy XV’s day one patch. You can view them below-

Omen Trailer moves Added to Game

• Attacks from the Omen Trailer have been added.

Wait Mode features Added

• Libra speed increased.
• The Wait Gauge slowly decreases kill enemies to add to the gauge.
  Surprise attacks added if you attack enemies who are not targeting you.

Critical HP light added

• When low on Hp the screen will gain a red hue to it. It gains strength as your health lowers.

Enemy Whistle Added

• Whistle summons Monsters. They come to your area.

MP Burst Improved

• Staggered movements are now gone.
• Shift attempts end up in a failed motion.

Ignis Gallery Added

• Gallery showing Ignis cooked foods as well as the fish you have caught.

Regalia updated features

• You can check map during auto drive.
• You can apparently shop while in the Regalia.

Kingsglaive and the Omen scenes Added

• Scenes from both added to game as they could not fit on disc.

Features Improved

• General bug fixes.
• Camera Improvements
• Improvements to the story. In particular the games opening.
• Side elements have been improved and added
• Leviathan Battle has been improved and fine tuned.
• Shift outside of battle has been added.
• You can listen to music while walking around with the Music player.
• Here is a video showing off some of the new combos-