Today i read in the paper that there are two titles thought to be for the book 6 & 7:
Harry potter and the mudblood revolt for the next book, and
Harry potter and the quest of the cantaur for the final book.
These titles were secretly registered as trade marks by a company called Seabottom productions. JK's literary agent refused to comment on the titles.
Personally i cant see that these titles are very likely. especially not the one for book 7. While we are still completely unaware of the content of the book, it does not seem to bare much reflection on the conclusion of the harry potter series.
For book 6 it bares no similarites to the existing rumours of the book being called, Harry Potter and the green flame torch
Combined with this i cant see that JK is completely certain of the title of the 7th book when she hasn't even written the 6th book yet! It also seems to give away too much about the books, which JK hasn't done in the rest of her book titles
What does everyone else think?