Here's a fantastic opportunity for fantasy, sci-fi, urban fantasy, horror, dystopia and supernatural writers from the Harper Voyager website:
"For the first time in over a decade, Harper Voyager are opening the doors to unsolicited submissions in order to seek new authors with fresh voices, strong storytelling abilities, original ideas and compelling storylines. So, if you believe your manuscript has these qualities, then we want to read it!
"We’re seeking all kinds of adult and young adult speculative fiction for digital publication, but particularly epic fantasy, science fiction, urban fantasy, horror, dystopia and supernatural.
"For more idea of the type of books we love to read and publish, check out our authors and their titles at www.harpervoyagerbooks.com
'Submissions for digital originals will be open for a limited two-week period from 1st to the 14th of October, 2012."
They want full-length manuscripts only, at least 70,000 words. Ideally they want manuscripts between 80,000–120,000 words.
Check out their website for complete submission guidelines.