Greetings,
The date of release,should be more an approx date,than the real date.If something is not working fine on the game,developers and modellers need to do some extra work to make it work,before they can bring it on the market.
It's,in my point of view,better to delay this date a bit,than to recieve al the complaints of members/gamers,of the game than.
The game should be working good,that's why some of the developers are busy to try the game now,and if something gets wrong,they need the time to fix it.
Regards
Marc