I'm not sure, but I'd suggest you take a look at the 4.3 thread already started. I'd link you, but I'm on my phone right now.
Does anyone know when the bannerbomb or wiibrew hack is coming out for 4.3 systems or is it a matter of just waiting?
i've had a look but half the thread at suggesting that i should either have ssmb or indiana jones which i don't have? so should i go ahead and buy one or wait?