The Sun, a tabloid in the UK, says that there was a screening of Harry Potter and the Half-Blood Prince movie in the US. It is not known where or when the screenings took place.  Stay tuned for more information on whether this is true or not and click More if you want to read about the screening. There will be spoilers.

The article states that many fans were disappointed with the movie calling it soppy, and added scenes pointless.

UPDATE: This has been confirmed as false.