This month's Comic Shop News features SUPERMAN #5 (Jan 2012) on its cover. The two-page article discuss why George Perez is leaving the title and Dan Jurgens and Keith Giffen will be taking over with issue #7.
Quote from George Perez: "I miss drawing. I can't see myself staying on as a writer, because I want to draw. That's why I really wasn't enjoying the writing as much as I would have hoped. I was asked to do Superman based on stuff that I had done before; however, since it was a total relaunch, I didn't recognize the character and feel as close to him as I had hoped I would, because it didn't seem like my Superman."
The free newspaper can be found free at most decent comic book shop, so check around if your store doesn't carry this.