Got mine back Yesterday. They did the upload twice, first time failed.
I have not really noticed a difference in the day i have had it back. The dealar i took it too ( not the one I purchased it from) had no clue.
I had to tell them what to to look up for the service bulletin info. To be fair this dealer pretty much only sells 528i models they just got their first 535i on order the day mine was in for service. So they have not had much hands on with the Turbo model. The SA did mention they noticed the acceleration issue on the model they just got in..