Chad points us to this site, which reports rumours of two sequels to Independence Day coming with Will Smith and Roland Emmerich attached. This could be interesting, as I always felt the original was more from the Dean Devlin half of the Devlin/Emmerich partnership, so any sequels which do get made could be very different from the original. Emmerich always knew how to make smart movies, and Devlin taught him how to make marketable movies, for better or worse.