As time goes on and miles start to add up you will see more bearing pictures, but for now it's clear you will need to change your bearings as a regular part of maintenance for the S65 & S85 motors.
Bearings at 50,000
http://www.m5board.com/vbulletin/e60...50k-miles.html
Bearings at 64,000
http://www.m5board.com/vbulletin/e60...res-2-s85.html
Bearings at 84,000
http://www.m5board.com/vbulletin/e60...000-miles.html
Bearings at 94,000
http://www.m5board.com/vbulletin/e60...000-miles.html
We have had several M5 members have to replace the engine as well because of rod bearing issues as well. Most under 60,000 miles. So to say that we don't see it, is just because there are so few that actually participate on the forums. But it is happening and truth is it's no big deal. You are looking at $500-700 in parts and 12-16 hours in labor. I changed mine in the garage so it is a DIY as well. We also have a member over in Germany that changes them regularly and his friend is one of the M engineers that travels around to the various dealership and see alot of M car, he stated it is a very common problem that can be prevented.