My LR has had the vibration issue for sometime now. I would feel it more than half the time I accelerate slowly through 40mph to 48mph - to a point where I am pretty much anticipating it every time as I hit 40mph. But for the past couple of months I now barely noticing it at all. Unfortunately it's still there, but i'd say it happens at a far less frequent rate than before - I'd put it at 1/5 - which is significantly better than before.
I haven't gone to the service center since early July, and my driving habit is largely the same. The only two changes I can think of is 1) software updates (I am on 36.5), 2) temperature finally started to cool down here in central Texas.
Has anyone else has similar experience?