I just updated from 0.76 to 0.77 and now my Samsung 46″ LED is doing line 4x (previously only went up to line 3x) 😀
I did notice something odd though in my short amount of testing. Some systems work in 5x as well, but the NES does not….unless I change TX mode from HDMI to DVI. That makes 5x work on NES, but it also stops HDMI audio :\. I didn’t know there’s a possible firmware workaround for this.