Just adding to this, is the tamron 150-600 issue sorted out while using it on a 7D or still no solution to it ?
I sent mine in for the firmware and could tell a big difference in IQ as well as AF. As far as sequential shooting I have no idea as I shake to much to hold on a bird while shooting all the way through several shots but I'm very happy with my lens after the firmware.
this appears to be correct. I just received a brand new ( ) copy late yesterday afternoon from Samy's in LA (I called last week & they had it in stock - for a couple hours). The model number is listed as "AO11E."
Ordered one about the same time you did and got it recently. Serial number was 0050xx while some guys recently got 0090XX through 0130xx. Mine was bad and got shipped back the same day I got it