The duo will reportedly have a more natural banter, where Simms and Nantz will acknowledge each other in the booth, as opposed to Michaels and Madden's stilted banter, primarily due to Madden's contributions having been stock audio from previous games.
The cover athlete, Calvin Johnson, was revealed last week on ESPN.
Madden NFL 13 will be released on the 28th August on multiple platforms including Xbox 360 and PlayStation 3. The PC hasn't seen a version of Madden since Madden NFL 08.