Two new Editors songs, named Two Hearted Spider and The Sting, were recently played live. This may be hinting at a fourth album - if so, it'll probably be released late 2011.
UPDATE: The band are recording four songs at the moment, but not a full album as they are taking their time writing it. Therefore 2011 is very unlikely for a release date, but I will estimate a spring 2012 release instead.
TWO HEARTED SPIDER