Link for an interview with Bong Joon-Ho, director of the first, posted at Twitch. He is not directing the sequel.
Is a sequel really necessary? Will the characters from the first be brought back? If the sequel loses the element of a family I would probably skip it; horror fans may still enjoy it, but I don't think the first movie really counts as a horror movie, unless one thinks Jurassic Park is horror (or Jaws). Song Kang-ho as Chief Brody...
I had forgotten that I had posted something about the sequel last year, until I was going through the results of a Google search for more news about the sequel.
The latest rumor is that the film will be a prequel, and not a sequel. Seems like the wrong direction to take... how will they be able to fit the events of the prequel into the timeline created by the original?
More on the sequel:
The Host Getting a Sequel! « FirstShowing.net
SciFi Japan » Sequel Planned for THE HOST
Robo Japan: Korean Monster Sequels Slated For 2009
Early Details on the 'Host' Sequel (Er, prequel?) - Blogging Sundance
The Host Spawns a Sequel in the Shape of a Prequel! - Film School ...