One of the characters were found on eBay, General Cryptor, it sounds like a villain:
Also, someone from a different LEGO forum has seen the pictures of these sets, and have described it as so:
"Saw the images for the 2014 Ninjago sets today... very different to the last lot of sets... the ninjas are not in their full garb... there is even a blue and white space ship that looks like it belongs in the galaxy squad theme... some of the ninjas from what I could tell are almost cyborg looking... who is the green ninja? cant remember his name... well he has from memory, instead of a Ninja mask its half of one similar to the cowboy face mask that goes over the mouth.. and he has a flat top blond hair piece... and there is also a big blue Mech.... Really should have paid more attention but not really into the theme. The biggest set is a brick built purple dragon. other then that I really cant give any more info... That's all I remember.... sorry"