Check out the subgenres they will consider:
We are acquiring editorial for new digital series, including:How cool that one of the categories is "Science Fiction Romance," both in terms of it being included but especially the tags.
- Harlequin Shivers (new!)
- Fantasy and Fantasy Romance
- Science Fiction and Science Fiction Romance
- Contemporary Romance
- Erotic Romance
- Teen Romance
- Your Brilliant Idea*
I'm not really surprised to hear this news. It was inevitable that more and more of the major print publishers would launch digital-first ventures.
I don't know if the existence of Harlequin Digital First will impact Carina Press in any way (Carina is the digital-first arm of Harlequin).
You can read the complete submission guidelines for Harlequin Digital First here. As always, be sure to do your research when submitting to publishers.