Post in the comments if you've found some leaked info or other things that we might not know. ;)
Here is what we currently know:
- Skrills will appear!
- Alvin will name his new dragon.
- More on Hiccup's mother will be revealed.
- Astrid's family may or will appear.
- Gobber may get his own dragon! (Unconfirmed)
- The season premiere will aire in September!
Spark said: The real Isle Of Night may appear.