Update: Sony didn't launch a new flagship tablet in 2016, but with MWC 2017 on the way we could soon see one.Sony released the Xperia Z5 at the tail end of 2015, but its last slate was the Xperia Z4 Tablet a whole generation earlier, and more recently Sony has shown little interest in either tablets or the Xperia Z range, with new Xperia X and Xperia...