No Female Companions as anything other than slutty rogues or timid mages
I hate to do this as a fan of Bioware who's genuinely looking forward to DA:I, but....
Sera, described as 'wild', normally industry shorthand for slutty (see Faith, Isabela, etc.).
Vivienne, admittedly not timid, but possibly the other stereotype of fashion/power obsessed loony.
Cassandra...yeah, can't see many problems here so far, but we haven't seen much of her other than in DA2.
Now, admittedly those are worst case assumptions based on extrapolation from what little information we have, but it's quite apparent that DA:I could very easily be incredibly sexist. I trust that, given their excellent track record with FemShep, the female Warden, Morrigan, Aveline, etc. that things won't turn that way. The fact is that at the moment we don't know.
Also, having played through 3 of my 5 Origins playthroughs as female wardens I must admit I didn't notice any great surprise about me being female. The possessed Warden Commander was female, Mhairi was female, and I don't remember any uproar about a female Aeducan, Cousland, or Mahariel knowing how to fight or (in the Aeducan's case) leading an expedition into the Deep Roads (ditto that dwarf legion of the dead scout from awakening - no surprise about there being a woman in that army). The Templars did, however, mostly seem to be male when encountered in Origins, and there are only two female Templars I can remember from DA2, one of whom was Meredith. Given that most of the enemies we've seen, outside of fade creatures and wild animals, have been templars of various stripes, I think it's not unreasonable that we haven't seen many women hostiles yet.