Penguin Group (USA)’s Berkley/NAL division is launching an eBook imprint called InterMix in January 2012.

InterMix will publish new eBooks and backlist titles in a range of genres including women’s fiction, romance, mystery and thriller, and science fiction/fantasy. At launch next year, the imprint will release 11 titles from author Nora Roberts as eBooks for the first time. This will include Cordina’s Royal Family and The Donovan Legacy. Additional eBooks from Roberts will come out in April.

The news comes as two other eBook imprints launched this week. GigaOM’s Michael Wolf launched a new eBook imprint dedicated to mystery novels called Bstsllr . And digital publishing house Open Road Integrated Media launched a digital imprint dedicated to “iconic” books called Iconic eBooks.