Hi and welcome.
It is my understyanding that all Z68 motherboards will support the IvyBridge processors once they are released. I can't see any reason why that particular motherboard would be left out apart from as a genuine mistake.
if u read it , you won't find Z68-UD3-B3 ... what you think guys i have to do
Just wait until the CPUs are made available and chill until then!