Okay I found out some stuff about season 8. some good and some bad...

◾Tommy Andreasen had stated someone will die in season 8

◾According to Tommy Andreasen, Cole will play a major role in Season 8.[2] However, he is not the focus character.

◾Various things will be revealed in this season, such as the First Spinjitzu Master's origins, the identity of the new Samurai X, the fates of P.I.X.A.L. and the Ultra Dragon, and how Zane inherited his Ice element

◾For April Fools day, Tommy Andreasen posted a status on Twitter with three events from Season 8, two of which are real and one of which is fake. The three events stated that Cole would do a lot of singing, that there would be old recurring enemies, and that a new ninja would join the team. None of these events have been confirmed.

◾It is expected that Acronix and Krux will return multiple times in Season 8, after being lost in time. Ray and Maya are also set to return.

◾Skylor will also return, yet is unknown if she will make a cameo or have a large role. It is confirmed her relationship with Kai is expected to develop more in this season.

◾The elemental powers of both Wu and Garmadon will be explained in great capacity.

◾Cyrus Borg, Dareth, Ronin, and Misako will all continue to be vital characters throughout the season.

◾This season marks the first appearance of more movie-like redesigns of the Ninja. The Ninja were redesigned to be closer to their LEGO Ninjago Movie counterparts in order to make the link between the show and the movie easier for new fans.

◾Lloyd has a completely different appearance. He now looks more like his movie counterpart, supporting green eyes and an identical hairstyle.

there you go! anything else I find out I will tell you guys!