I've been playing around with my Z2 now for around two weeks and It's all good excluding the screen digitizer reflections that are visible in bright lights.
Anyway, to the point. The home launcher seems to be rotating only when connected to the docking station and not while in hand. I heard that there are mods or apps that make it auto rotate when holding in hand too, but some how i couldn't find any proper apps for the 4.4.2 launcher.
Other thing that is bothering me a bit is the responsiveness of the launcher. When i press the home button it takes like a second to respond (actually show the launcher). Same goes with the open apps button. Takes a while to open. I wonder if this is a software issue Sony is going to fix or not.
I don't see any real reason why it takes so long for the home launcher to open since switching from other apps to apps is instant.