As at least 12 people on my flist have pointed out, the name of the sixth HP book has been revealed! And like an idiot, I immediately posted it myself as well, not thinking that there could be some who wouldn’t want to know yet for reasons beyond my comprehension. So anyway, in absence of an LJ-cut, I’ve blacked out the text. Highlight the supposedly blank space below to read.
Rowling added, “Certain crucial pieces of information in book six were originally planned for Chamber of Secrets, but very early on (first draft of Chamber) I realized that this information’s proper home was book six. I have said before now that Chamber holds some very important clues to the ultimate end of the series. Not as many as six, obviously, but there is a link.” Rowling said that the “half blood prince” of the title is neither Harry nor Voldemort.
Though I must confess, I prefer alice_and_lain’s suggestion of “Percy Weasley and the Black-Haired Kid with the Lightning Scar.”