Hello mappers!
You're getting this note because one day (probably a long time ago) you asked to be notified about updates regarding NS/NS2 mapping. We released the Spark SDK including our level editor and all our environment artwork a few months ago and the community results have been impressive (http://www.unknownworlds.com/ns2/forums/index.php?showforum=92).
Just a quick note to let you know that we're releasing the NS2 "Engine Test" this Friday to everyone that has pre-ordered NS2 (either edition, http://www.naturalselection2.com/buy). This will let you load up your map and run around it so you can get a much better feel for it.
We're also releasing a big update to the Mapping Guidelines which adds a lot more specifics around hallway and vent sizes, doors and entities needed to make your level work with NS2.
We hope you enjoy it and are looking forward to your feedback!