I had assumed that the migration to Ethernet was a done deal. I guess this article is saying that it is, but that not everyone has made the shift yet. I think we're also seeing something of a taxonomy/nomenclature problem, which is something that has plagued the whole discussion of fieldbuses for a long time. Namely, Ethernet isn't so much REPLACING field buses as it is BECOMING the new, de factor field bus standard (via protocols layered on top of it for safety etc.)
Ethernet as a standard on the factory was really inevitable given the requirement to sync up production systems with front-office IT systems like ERP and even PLM. It is only with that kind of tight integration that companies can hope to garner the visibility and traceability necessary for boosting the efficiency of their production systems and moving to just-in-time manufacturing.
Earlier this year paralyzed IndyCar drive Sam Schmidt did the seemingly impossible -- opening the qualifying rounds at Indy by driving a modified Corvette C7 Stingray around the Indianapolis Motor Speedway.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.