Board Thread:General Discussion/@comment-24185694-20140827011847/@comment-8986886-20140827125416

Since Kubo has supposedly promised that the Fullbringers will play a pivotal part in this arc, then obviously they've retained their Fullbrings after death. It is possible for Fullbringers to develop a Zanpakuto, since both Ginjo, and Ichigo, have done so in spite of their Hollow powers, but I agree with Aetheral that it's too late for it to matter since there isn't much time left before the endgame.