User blog comment:Xilinoc/Ch. 547 - Peace from Shadows/@comment-1268838-20130904145545

I liked the small glimpse of Ichigo in the beginning. I had figured that we wouldn't get too much from his end. It looks like he is getting ready to head out, probably to Senjumaru's palace.

I think a couple of us had suspected that the Quincy were already within Seireitei, if not Soul Society as a whole. Kubo had after all, mentioned that the enemy was "somewhere close." This is about as close as you can get. I believe this also answers the question of how the Wandenreich has so much intelligence on the individual Shinigami. With 1000 years to bide time, they probably had little else to do but watch.

Mayuri doesn't look too worried about this whole thing. I'm guessing that his "light lab" wasn't what he was working on, but rather a means of hiding whatever he was doing from the Wandenreich, which would explain why he went out of his way to seclude himself. Meaning he definitely has something up his sleeve for this.