Here's an excerpt from the site's article which reveals the exact point where Harry Potter and the Deathly Hallows ends.
"Part I, by the way, will end at about Chapter 24 of the book, with Voldemort gaining possession of the Elder Wand, one of the three Deathly Hallows that allow the bearer to conquer death."
The Hollywood News also mentions that the split point comes much later than fans were expecting and the split point, "seems to indicate that Part 2 will consist almost entirely of the climatic Battle of Hogwarts," according to the site.
Harry Potter and the Deathly Hallows - Part 1 was released November 19th, 2010 and stars Bill Nighy, Emma Watson, Richard Griffiths, Harry Melling, Daniel Radcliffe, Julie Walters, Bonnie Wright, Rupert Grint. The film is directed by David Yates.
Harry Potter and the Deathly Hallows - Part 2 was released July 15th, 2011 and stars Ralph Fiennes, Michael Gambon, Alan Rickman, Daniel Radcliffe, Rupert Grint, Emma Watson, Evanna Lynch, Domhnall Gleeson. The film is directed by David Yates.