I keep wondering about what Harry's standing with the Council is going to be when he returns. He was officially dead for months, his apprentice is an outlaw (though she's apparently not a top priority for the Wardens) and there's no way the Council doesn't/won't know about the Winter Knight gig. Harry Dresden- Outlaw Sorceror?

Offically dead?   There was no body, he was missing and perhaps presumed dead by most of his friends...but there was no "Official" decision he was dead.  His friends held an informal graveside gathering.   If the white council went looking for him, they would either find his body at Demonreach or more likely be blocked in their search by Mab / Demonreach / Uriel.   No reason to assume Harry is the first wizard to go missing for a few months and turn up again.

Harry's position as Winter Knight will probably strengthen his position with the White Council, the council might not like it but they won't go against Mab without good reason.   Now, Harry is still required to comply with the White Council's laws of magic even while working for Mab.. that will cause some conflict I'm sure.   The White Council won't trust him as Winter Knight, but they didn't trust him before anyway.