Just had 3 games and it's pretty good. Controls are much looser than in FIFA 14, players are more mobile and matches seem quicker like in FIFA 13 but not too fast. Goalkeepers have been improved significantly but refs still shite. The player mechanics are still a bit wobbly but the games seem to flow better. FIFA 14 was just a bit too slow and robotic at times particularly with the lower teams.
The presentation has been upped and the atmosphere has improved. The one thing I didn't like was the highlights which have gone cinematic for some reason.
Overall, good stuff though and I can't wait to get this in a couple of weeks.