UPDATE: Lucasbooks has confirmed the cancellation to Knights’ Archive.
Knights’ Archive spotted that the new Essential Characters is now listed as canceled by Edelweiss. We last heard that the book was posponed to 2016; it’s possible this is actually just another posponement, pending decisons regarding Episode VII and other new film content. (Perhaps the 2035 date is just intended to keep it out of other systems.) I doubt we’ve seen the last of Star Wars character guides!
Edelweiss is a site that publishes electronic versions of publisher book catalogs: We have no reason to believe these changes don’t come from Random House.