Joe Madureira posted the cover pencils to Avenging Spider-Man #3 on Facebook recently. There has also been news that he will only be doing the first three issues of Avenging Spider-Man and return later on for another story arc. He cleared this up himself,
To answer some of your questions--YES I WILL return to the book after my initial 3 issue story arc. I will be alternating with some of the best in the business, so this book is going to rock no matter who's on it. I'm signed on for a few different story arcs so DON'T WORRY, I'm not going anywhere.