The comic book annual has, in recent years, become an endangered species. Once an oversized, extra-length dose of the characters and concepts a reader could count on appearing once a year (or, you know, annually), the changing funny-book landscape has made them a less appealing proposition.
The rise of the graphic novel and trade paperback collections made “novel-length” adventures appearing in actual, off-the-rack comic books somewhat obsolete. The rising price of comics helped make annuals seem less practical; if a 20- or 22-page comic costs $2.99 or $3.99, a 48- or 56- or 64-page one would be prohibitively expensive. And with the shrunken market, it doesn’t make sense for a publisher to release an additional, extra-long issue of almost every title in its line.