no... 4.3 is only for CDMA devices right now, like the 8130, 8330... every other device is still running 4.2.2 and soon to have 4.5 (when RIM releases it)
also if you didnt know... you can only use the OS that is specific for your device... meaning any carriers OS for the 8320 can be used on your device... doesnt matter what carrier (vodafone, tmobile etc...) as long as its for 8320... and you cannot load another devices OS on your device (just doesnt work) for example a 8310 OS will not work on the 8320, etc etc