Before thinking that Piledriver is in good shape, we need to see the following:
Quad-core Trinity @ clock X
FX-41xx @ same clock X
Control: Deneb (unlocked variety) @ same clock X
All quad, set at the same clock, then benchmark them. Then we will see what improvements have been made, and by how much. I have a horrible feeling (after reading numerous predictions) that clock for clock IPC improvements between Piledriver and Bulldozer will only be sub 5% (like only 3%). I have a feeling that AMD will be relying heavily on being able to clock Piledriver higher than Bulldozer (because of supposed leakage repairs), in order to bump overall IPC into double digits (10-15% overall). And my worst feeling of all: Piledriver at best, will only be able to equal Deneb/Thuban, and that's still with clocks about 1GHz higher than the previous gen (Deneb/Thuban). I am of course thinking of single and lightly threaded applications.
My only hope is that they've patched up the electrical leakage issue enough, so that it can be pushed to 5GHz, without consuming insane amounts of electricity. That way, it should be able to be competitive, if not finally be able to squeak past, in lightly threaded apps (at least, hopefully, with Deneb/Thuban).
Anyway. I think we need to see the above benchmark scenario in order to really get a good picture of what Piledriver brings to the table.
Workstation: Opteron 150
"Every Day": Athlon II X4 630
Server: Athlon X2 BE-2400
Gym: SN45G w/ Athlon XP 2500+ (800 MHz @ 1.3V)