As fantasy fiction becomes more focused on contemporary environments, as opposed to medieval and ancient worlds, technology plays an increasingly important role in the stories. This evolution brings more Science Fantasy into the fold, just in time to meet the audience bemoaning a slowing-down of Science Fiction.
Magic is prominent in this sub-genre, but it may be set up in conjunction with, or in opposition or juxtaposition to “real” science and technology. These joinings and divergences may create harmony or lead to havoc, depending on the storyline.
Varies greatly depending on the story. There may be many or few characters, stock types or richly detailed.
Also a large variety here, with technology taking a minor or major role. Dedicated fantasy readers may find it difficult to deal with some stories that include a lot of science/technology.
The level of violence and sex is highly variable. The stories themselves can lead anywhere and embrace any theme found in the other sub-genres, their cohesiveness provided only by the melding of science and fantasy.