Are we switching to a 4-3 defense?

Is Lovie Smith going to be bringing in a 4-3 defensive scheme? Personally, I think Cunningham will feast even more in a 4-3 scheme. Shaq and Mercy on the ends, PJ and Collins eating in the middle. Kirksey and Cunningham being the voices. Reid and Moore over the top.

Also what is going to happen with Lonnie? Our DB room is pretty strong, you think he stays as a Safety? You'd think Roby and King would be CB1 and CB2, then Mitchell CB3.