Had the TSB/Recall done on my bike a couple of days ago at the dealership.
At about 400 miles or so I noticed the noise. I thought it was clutch related, as the noise would almost go away when the clutch was pulled in at idle and after the engine warmed up. I mention the noise at first service and they said it was normal, and not to be concerned about it. I know have 10K miles on the bike and after having this done, that noise has gone away. It's very quite now at idle and pulling in the clutch only slightly changes the noise now. Big improvement, just hope it lasts. Seems pulling in the clutch was changing the load on the idling engine enough that the noise would subside until it was let out.