Gameinformer speaks about their impressions of playing the first chapter of Final Fantasy XV:
Some interesting bits in there.

For everyone who doesn't want to watch all of it here some important points:
- The game is set in an open world environment but the developers still don't want to use the term open world since the game's focus lies on the story and a predetermined path. You can explore off-road at any time though and find lots of stuff to see and do if you want to.
- Fighting mechanics were significantly improved and extended since Episode Duscae.
- Fighting looks as flashy as Devil May Cry and Bayonetta but it is a lot easier and less technical.
- Fans of especially Final Fanatsy 5 and 6 will reencounter many fan favorite monsters.
- Graphics look still a little rough but the game footage they played and released were from a pre-beta build.
- The car can be used off-road but seems to be automatically drawn to the roads. It's a litte like The Witcher 3's horse Roach.
- The game world is really big. It can take several minutes when driving from one point to the next.
- During driving there's party banter (so far only in Japanese) and you can listen to a radio program with many well known FF songs.
- The development team is well aware of fucking up with the XIII-triology and they want to make it right with this installment. They see this as a make or break point for Final Fantasy.
- There will be no sequels to this game. They want to expand the world and lore with other projects (mobile game, anime, movie...) though.