Urahara finally contacts Ichigo by using an unwittingly-modified Kon, but we get absolutely no new information on what’s actually going on. Even the unknown person who confronted Urahara a while back remains unrevealed. Judging from Ichigo’s reaction, Ryuuken or Ishida would be a good guess, but the katana we saw in the cliffhanger seems to imply someone else. Whoever it is has a pretty foul mouth as well and seems to know Ichigo as well, which brings Grimmjow to mind. He fits the description pretty well, and we know he didn’t die so it seems like an appropriate time for him to show up again.
Grimmjow wouldn’t be the only former villain returning to help the good guys; Kubo seems to be bringing back a lot of characters for this final arc. Kuugo, Tsukishima and Giriko are back. I’m assuming they were sent to Soul Society after they died, and they are training for battle again with the Shiba family. Though it’s not clear whether or not the three of them lost their Full-bring powers, unless they come up with something radical, they are not likely to be able to do anything significant in the upcoming battles.
As for Ichigo, I can’t help but think that there are a lot of things that people are withholding from him. He really knows very little about a lot the circumstances around him. Ichigo’s mind is purely focused on protecting his friends, which makes him too trusting of people who seem to offer help in that regard. It also causes him to miss the big picture sometimes, making him little more than a pawn (albeit a very strong pawn) that is good for showing up and winning battles, but little else. I see more double-crosses and shocking revelations on his plate in the near future.