The new ED & OP can be found here↓ you can go listen to them if you have an account.
http://www.nicovideo.jp/watch/sm5798765
^that's the ED, and it'll automatically redirect to the OP when it finishes
The ED is pretty catchy. The OP needs some time to warm up to, IMO. But I guess it fits the mood of the show when this arc is finished.
EDIT:
It's on an infinite loop. And I can't bring myself to close the tab.