There have been NUMEROUS mentions of our transformation to a 3-4 defense.
So why don't we see them running it?
Because what we see them running at an open practice means next to nothing.
Ex: Wes Welker being worked into the offense more. Does anyone remember who the stars of mini camp were the two years before this? Brad Russell and Anthony Simmons were "tearing it up out there". When the season rolled around, both of those guys were long forgotten. It's easy for those little, quick guys to make a name for themselves when there is no tackling....so they get used as decoys.
The real stuff comes out when we're not allowed to be there and when the first game of the season rolls around. before that, we're not going to know much of anything about what's really going on.
Saban is playing everything close to the vest and if you think you're going to figure out what he's doing from watching an open to the public, three day mini camp in June, you got a hundred more thinks coming.