And speaking of upcoming Ditko, looks like DC will reprint some Creeper next year in SHOWCASE PRESENTS THE CREEPER, which will presumably be a black and white book, though slimmer and cheaper than the existing SHOWCASE PRESENTS books. Listed at 296 pages, my count of Ditko's stories, including the one intended for SHOWCASE #106 comes to 254. Add in the non-Ditko half of BEWARE THE CREEPER #6 and some non-Ditko covers gets us up to 269. On the other hand, there are some other non-Ditko stories (BRAVE AND BOLD team-ups, a JLA issue, some solo stories in ADVENTURE) which might be included, so I wouldn't take it as a given that all the Ditko, including the unpublished story, will be included, though that would be a big selling point. Book's not out until next summer, so details won't be out for a while.
[note, this appears to have been canceled, and a colour hardcover appears on DC's schedule for 2010]