There's a piece of text that's been point out on another board.
From the sidebar on page 209:
"I guess when your half-brother is a White Court vampire and your mother is an honest-to-goodness faerie, things are bound to get complicated."
Note: this isn't the same sidebar in the pre-release PDF. The sidebar from the pre-release was replaced with a new one.
Now there is no source that says that Harry's mother was a fairy, but if the line read "and your godmother is an honest-to-goodness faerie" then it would make sense.
Just wondering if anyone can say if this was typo introduced late in the process or something else.
Richard