TV's Frink said:
Independence Day 2? *sigh*
2 and 3.
Wookieepedia said:
In March 2013, Emmerich stated that the titles of the new films would be ID Forever Part I and ID Forever Part II.[87] The films will take place twenty years after the original, when reinforcements of the original alien race arrive at Earth after finally receiving a distress call.
But look on the bright side -- you could always use the material to make A Ridiculous Independence trilogy. ;-)