Heat Vision is reporting that Scott Z. Burns has been called in to write the currently untitled sequel to Rise of the Planet of the Apes. It's not an entirely surprise choice considering Burns' last hit was the virus-sweeps-the-globe flick Contagion, and Rise leaves off right at the precipice of a pandemic, but that's admittedly a superficial connection (then again, Hollywood does love to connect simple dots). More than likely the producers behind this new Apes were impressed with the screenwriter's ability to tell a large story within relatively small confines.
Presumably Burns is being brought in to do an update to an initial draft from Rise masterminds Amanda Silver and Rick Jaffa. Fox had originally tapped them to come back, as well as mo-cap star Andy Serkis and director Rupert Wyatt, and while the later two are still confirmed, it's not entirely clear how involved Silver and Jaffa still are. It'd be a shame to see them bumped off the project after being instrumental in reviving the franchise in the first place.
Either way, we were quite taken with how energetic and well-conceived Rise of the Planet of the Apes was (we wish we could say the same for all franchise reboots), so we'll be keep an eye out for further news on the development of the sequel.