NO SPOILERS, so don't worry.
Parts 1-3 are up on youtube.
So far, all I can say is WOW!!!!!!!!!!!!!!!! !@$#$^%$%@%!%#^$#^! WOW!!!!!!!!!!!!!!
There is no "introduction" to the team/concept. The idea seems to be that the viewer already knows his JOE history.
Great action, great animation and a solid story.
I'll say that most of the characters who have lines seem solid without a "cheese" factor to them. Oh, and CC's voice is good. No hissing, but a bit of a nod to the original. Roadblock is HUGE, which is great. Most characters have their iconic costume, though some have later versions.
It may be early, but I think I can say that the movie coming in august missed the boat.
Please Hasbro, give us more than 1 hour.