According to a reliable source, the October issue of Dragon Age (released September 9th) states that the November issue (available October 9th) will have a color chapter of Highschool of the Dead. There are apparently no other details. This is most likely a colorization of a previous chapter, which may mean the Full Color Edition will get a continuation during the series' current hiatus, but since there's no information, it could be anything.
I'll give you more information as it's available.
UPDATE: I can confirm firsthand that the preview does mention a color chapter of HOTD appearing in the next issue, but there are no other details whatsoever. I guess I'll let you know what the deal is next month.