I've been following this thread closely as a new 528i owner. I did experience the dreaded "no response then lurch" issue, but it magically disappeared after around 900 miles. I live in a crowded city (Taipei) with slow stop-and-go traffic, I don't know if it makes any difference. I do know that I DID feel the transimission learning my (slow) driving habits while it improved and eventually responded properly. So in my case it was as some people have suggested, a transmission learning curve.
My experience probably doesn't help those who have more mileage and still have issues, but I just want to share it and maybe it might help.
Mine is a May build.
2011 BMW F10 528i Black Sapphire Metallic / Black Dakota with Dark Wood Trim
2006 Lexus ES350