One of the other issues that comes up from time to time about these generational issues is whether or not the behaviors we are seeing are just a US thing.
While I wouldn't call myself a global worker, I do work with teams in many other continents on my projects and volunteer work.
I do see some traits in younger workers that I believe are tied to the world in which workers grew up.
For instance, having many technologies at their fingertips, I find that younger IT workers expect the business to love new technologies as much as they do. We Boomers started our careers with almost no technology at home and got our hands on computers only at work. The technologies we had at home were TVs and telephones. Actually, many of us grew up during a time when we had zero to one of each of those. I can still remember the day that we got our second TV and the day that we got a second phone installed.
I can also remember the day I received my first real personal computer at home. I think I missed sleeping for a couple of nights just playing with it. It was a few months later we got...wait for it...CompuServe so that I could go online with it. In fact, I remember calling Compaq for a problem we were having with the modem and the 3rd level tech support person eventually diagnosed the problem as our being in a foreign country, because phone lines aren't well maintained in foreign countries. I believe he thought we lived in an igloo. That's how new everything was to them and to us.
So we Boomers came to work to get our hands on technology, while GenYers go home to play with the newest technologies. This generation will almost never find better technologies at work. My developers have better monitors, better systems, more up to date software, more tools and better development tools at home than they will ever get at work. Sure, some of them have stolen that software or they are using open source tools that aren't allowed at work. Either way, they still have it and use it at home. We Boomers, on the other hand, had no opportunities to go home and play with the latest technologies because we didn't have a mainframe at home to play with (at least I didn't).
Because they installed this software at home, they have sysadmin (full administrator rights) on all these applications at home. They feel frustrated that we admins "don't trust them" to have admin rights at work.
I have seen this response from my teams in many geographic locations -- Asia, Middle East, Europe, North America. Does that make it a global trend? Not necessarily, but it sure does tell me it isn't a US-only thing. In fact, as I get more opportunities to work with the younger generation of IT professionals around the world, I'm finding that they have much more in common today than I had when I was starting my career.