My short career has taught me that dealing with enterprise users and getting them to accept new software is almost as challenging as building and implementing our complex software that we write. With that said I think it is critical for all developers to stay current and moving forward.
The AdventureWorks DB came out with SQL Server 2005 but yet many examples are continued to be written against the Northwind DB or even worst Pub (which I guess was before Northwind?).
If we are going to ask users to move forward we can’t be hypocrites!