Word out of Green Bay is the D has been working on more blitzing packages than normal. This wouldn't take much as the Packers defense was among the most vanilla in the league last year - albeit a very solid one. The sack totals slipped as the year went along helped in large part to the injuries to KGB, Johnny Jolly, and Colin Cole. Cole and Jolly in the rotation made Corey Williams more fresh throughout games. Of course, Williams is now gone.
The main benefactors of this more aggressive defense could be Nick Barnett and AJ Hawk...as highlighted in this ESPN article. People have been waiting for Hawk to make more "special" plays...like you would expect a #5 overall pick to make. But, if they only put you in base, vanilla sets...that can be hard to do. Time to unleash the fury.
Of course, running blitz packages in June and running them in September are two different things. I, for one, would love to see what this talented defense can do playing more aggressive.