TBH I'm quite disappointed that for the past 3 updates nothing substantial has been updated for Xperia X. No official double tap, CPU cores are still not properly utilised, not all sensors work and it still has autofocus issues. But it seems that 3.0 being released in two waves. 3.0.0.5 now and 3.0.1.0 in December which should be adding a massive QT upgrade which they claim up to 50% boost in performance.