Check out the official thread that constitutes Volume 2 of the Dark Ambient Radio compilation. Projects that have expressed their interest to participate are currently (by 4th of February):
Despite the number of projects (33), the participating artists decided that a CD-Audio will be produced and only the very best tracks will find a place on it. (Sporty decision. Now enjoy the competition! :) )
The deadline for joining in this project was 28th of March.