Yes, definitely a surprise. The 24-70/4 IS costs $750 in a 5DIII kit, so I suspect (but I haven't looked) that there are white box versions of that going for less than the $900 cost in the new 5DIV kit.
I wonder if this is a short term thing, and Canon will drop the kit prices (i.e. offer rebates or bigger rebates) faster than the body-only version?