well its a complex question... do you want the new features, the looks... do you want to replace your cpu too? depends on what you want...
budget wise it is not wise at all... only 1 generation apart...
I would say, wait untill broadwell CPUs launch, and then see (maybe some new mobos will come also)...
also the new x89 (or was it x99...) motherboards are bound to launch soon... I think you may have seen a few at computex