I've been listening to it since it leaked. It's good, but not great. It's just a cute, fun, short record. It lacks the creativeness of Gimme Fiction. You will not find ANY epic tracks on Gax4 like Gimme Fiction had with The Beast And Dragon, Adored and My Mathematical Mind.
It's a summer record. It's a definite step backwards, but in a good way, since it matches their earlier work well, but doesn't surpass it.
Britt Daniel is an amazing musician though.