but they specifically mentioned the FF on the press release:
The agreement also provides Disney with the opportunity to reunite the X-Men, Fantastic Four and Deadpool with the Marvel family under one roof and create richer, more complex worlds of inter-related characters and stories that audiences have shown they love.
Power Rangers was actually good, but i can see why some people might not like it. It's kinda like TV series, you either like Power Rangers( or Tokusatsu in general), or you hate it.
It’s a variant cover. Nobody is having Magneto side with Nazis. This is just covers depicting what heroes and villains would look like if they joined Hydra.
The chance of any of these covers being a spoiler for Secret Empire is next to zero.