Even after losing the Kyuubi, Kushina was in a very weak state. Naruto's not dead yet but like his mother he's in a weak state. He's probably alive right now because of his Uzumaki bloodline. Or Kishi is going to have Naruto be saved by Sakura and totally ignore the Uzumaki bloodline. As for why the shinobi still have beast cloaks. It could be that Kurama planted chakra in them and when it runs out the cloak will disappear and not restart now that he's captured. Or it could just be a inconsistent writing.
Originally Posted by XanderCage
RIP anime version of Glovehead. Pokemon Adventures will save you.