http://forums.darkfallonline.com/showthread.php?t=112683-According to Tasos, the target player-base for a server is 50k people
-Also it says something about monsters attacking cities if they feel confident enough(!)
-The world is roughly the size of Luxembourg and takes 6 hours to cross (means of transport unspecified).
-The subscription cost is expected to be 12 euros.
-25th of February is confirmed as release date.
-10.7 million euros were spent for the production.
more in the link but this is the stuff i found most intresting