An old article was found that actually gave away some good plot points to the sequel in an interview with the How to Train Your Dragon sequel director Dean DeBlois.
The interview claims that the sequel will be "multicultural" and that Hiccup will come across new dragons, new cultures and....more women. Yes, you read that correctly. Here's what DeBlois had to say:
"It certainly will be multicultural. At the end of last film, all these Vikings who were previously somewhat landlocked are now on the backs of dragons so the entire Northern Hemisphere opens up to them. And with that Hiccup’s curiosity increases, the map expands and inevitably they are going to come across new dragons, new cultures, and more women.”So, some great news there! Who's to say you can't learn new things from an old article? You can read the whole interview HERE.