An interesting item post showed up on Amiamirecently, for the Sora no Kiseki the 3rd Special Collection Book to be re-released with a new edit, new reorganization, and new illustrations.
All I have for a release date is sometime in April of 2012.
I can’t find anything on sites other than Amiami. I’ll keep looking for if I can verify more information. I’ll post more information on it once it comes out.
For now, I’ll go ahead and set it to 4/31/2012 and readjust the release date (or remove it) accordingly.