I saw a post on Bike Radar that someone snapped a 6800 cable with 2500 miles on it. So it appears this has not been fixed by Shimano yet. Can't say I'm thrilled about this as someone who is about to install 5800 on my bike with the new polymer coated cables. Worst case I'll just replace the rear cable myself every 6 months (hopefully) before it snaps. I had 9000 cables on my 5700 setup and the RD cable was badly frayed at 6 months.