A friend of mine has created a petition to change the release date back. Sign here:
Change the Half-Blood Prince release date back to November 21, 2008

This probably won’t do anything, but it is worth a shot.

UPDATE: Okay guys, I made this graphic so we can post about the petition, you are free to use it anywhere, just dont hotlink:
 
Sign the Petition

UPDATE: More petitions, ONE, TWO.

Filed Under: Half-Blood Prince