It looks to me like the Edwards campaign is declining to confirm prior to the official statement. Elizabeth's cancer has reoccurred; it is unlikely that Edwards will continue in full campaign mode. The only thing I like about him is his devotion to his wife - which does appear very sincere.
What do you expect from a consumate politician, a divorce?
I've never been married but knowing that my wife had at most 5 years to live I certainly would want to spend as much time as possible with her. Unlike most people, they have the means to travel the world for the rest of her life just enjoying each other, that is what I would be doing, not running for the Presidency. Like he could possibly make any difference if he could even get elected.