You just gotta love how Microsoft sneaks things in.
4.6SP2 is pretty much a rollup of hotfixes (almost all of them since 4.6SP1 came out), plus support for Windows 8, Server 2012, and additional client changes for transitional dual client scenarios with App-V 5. As always, you should check the Readme documentation for details, but in the time honored tradition of making changes without telling us, there is more. And when someone in the community finds one, it is nice for them to tell everyone.
So here is one. The following screen shot is from the 4.6Sp1 sequencer:
And here is what the same screen looks like with the same app on 4.6.2:
So it looks like an improvement to the detection logic, or perhaps more accurately, a bugfix to faulty improvement logic. Maybe that means they also fixed the one where it sometimes misses device drivers?
It is nice that they fix these things, I just wish that they would acknowledge it so that we know not to trust the version currently in use by most companies!