1. The first futa scene will occur in Episode 4. Sub/dom, pregnancy, incest and harem are future fetishes that will happen. Other stuff like tentacles or whatever tickles my fancy might be included, but there's no firm timeline on that.
2. Bi-monthly is once in every two months, in this case.
3. Whoops, it always takes half a year for me to adjust to the new year... Changed those dates as Episode 3 was just released.