We'll have to wait and see who comes back from the original and see what's next for Will Smith...
via justjared.com While Independence Day 2 was recently announced for a July 2015, the original film’s star Will Smith will not be returning for the sequel.
“[He] can not come back because he’s too expensive, but he’d also be too much of a marquee name,” the film’s director Roland Emmerich said (viaComplex). “It would be too much.”
“We’re not doing a total reboot, we’re doing something that’s totally unusual,” he added. “I think some aliens will be back.”
The sequel will reportedly be the first of a two part-story with the title ID Forever, Part 1.