I recently purchased my Xperia tablet Z and it's running android 4.1.2 ( I've checked in the settings if any updates are available but unfortunately not)
Does anyone know if there's any update on its way?
I have 4G/WiFi version from Vodafone UK.
If none are coming through OTA then maybe try connecting to your PC? Never tried that myself, I'm sure someone will come along and suggest how, maybe go to sony website and see what's what.
It is much smoother on 4.3, but has anyone else got issues with YouTube being a little slow to open and sometimes not loading first time? I sometimes have to kill it off and do it again.
If it's your screen flickering when you got your keyboard on with chrome, then the only temporary solution is to disable HW Overlay in the developer options.