Nope it's the same design, even if the plastic moulding has changed slightly through the years. I've posted about it before and still appear to be the only person that doesn't have problems with swivels
I just give it a rinse before launching my kite and make sure it spins with very little friction, then forget about it until the next session. Once in a while I forget to rinse/twist it before going out and it doesn't swivel, but I can usually manage to dunk it while the kite's still flying and twist the crud out of it by turning the trim line around in circles, then I'm good to go.
The only swivel I've had that doesn't work at all is the switch one, even when brand new it's never untwisted my lines. But their below the bar swivel is awesome so it's never been a problem.