You want your systems to be running stable, known working, and reliable code. Who cares if it's version 10 and not version 10.0.4134. Let the dev monkies play with the updates in the background and when a service release is out test it further.
Unless there is a positive gain (security, feature release, or annual patch) then the old code is just fine. It works, don't touch it, leave it the hell alone and go play with your crap in your lab.
Another reason I hate the DevOPS movement. Combines the worst of habits of a Dev Monkey and a System Admin.