Complex sentence: David Michaels is currently working on another "Splinter Cell" which is unknown at this time, he has said to release the books name on October 17,2007, where he will also release the books release date.
Split into simpler sentences: David Michaels is currently working on another "Splinter Cell" novel. He has announced that he will release the novel's title on October 17,2007, when he will also release the novel's release date.