Looks like Jamie Foxx is in talks to reprise his role as Electro for the upcoming Spider-Man 3. Sure, it’s got implications for a multiverse, but his character was awful.
According to IGN:
It's unclear whether Foxx's Electro will indeed be the very same version as the one he played in Amazing Spider-Man 2 or if, like Simmons' J. Jonah, he is a revamped version. If he is the same version then it looks like we're looking at a real multiverse, as opposed to that fake one Mysterio hoaxed people with. This line of thinking of course opens the door to everyone from Tobey Maguire and Andrew Garfield's Peter Parkers to Miles Morales or Gwen Stacy being able to show up.
EDIT: Looks like it’s a done deal. AND he won’t be blue.