Samhain Publishing is looking for submissions for several upcoming lines -
Just Romance, where they are dialing down the heat. So if you write sweet/sensual romance, you might want to take a look. http://www.samhainpublishing.com/submissions#spring
Cyberpunk - A yet to be named anthology of stories taking place in the future, a cyberpunk future—post-industrial dystopias where society has broken down; a world of advanced science, cybernetic and tech. Think the Matrix and Blade Runner.
Evernight Publishing has a call for an upcoming anthology titled Indecent Encounters. So if you write short, hot menage, this might be the venue for you!
Phaze has a call for an M/M Steampunk anthology. Steampunk is rumored to be the "Next Big Thing" in romance. So, if you want to hop aboard that runaway train, A La Wild Wild West, you might want to check out the guidelines.
Ellora's Cave has some really exciting calls out for next year. Their submission guidelines can be found here.
These are just a few of the e-publishers with active calls. Just Google your favorite e-publisher. As always, please be sure to follow their submission guidelines!
And good luck!