A publicist for The Hobbit films today released a statement that Peter Jackson's has had emergency surgery:
Sir Peter Jackson was admitted to Wellington Hospital on Wednesday night with acute stomach pains. He subsequently underwent surgery for a perforated ulcer. Sir Peter is currently resting comfortably and his doctors expect him to make a full recovery. Sir Peter's surgery is not expected to impact on his directing commitment to The Hobbit beyond a slight delay to the start of filming."
The two films are expected to start filming soon for December 2012 and December 2013 release dates.