i have the xt1032, got update 5.0.2, en.GB.
I'm very careful about these sorts of things, but after much reading, and keeping up with the news for a long while, I did the upgrade yesterday.
it's obviously too early to say much, but, everything seems just fine (with my usage patterns). I did factory reset before upgrade, then factory reset and wipe cache partition after upgrade. this took some time, but it will be the cleanest experience.
I have noticed I have more ram for multitasking! that is something I wasn't really expecting. I've got everything setup except for nova launcher.