On my Tab 3 8.0 4.2 seems stable with no issues and working well for me. Unless there is a major performance enhancement, I could care less about an update. Samsung has a rep for late updates, so I would not stress over it. Had a Nexus 7 original, much prefer the 8.0 screen size and SD card slot of the Tab 3; a better trade-off IMO versus 4.3.