New Half-Blood Prince teaser trailer coming soon?

Mugglenet reports that the British Board of Film Classification’s website has been updated with information concerning a second Half-Blood Prince teaser trailer. Coming in at 91 seconds long (the first teaser trailer was 96 seconds), it has a PG rating and was just approved yesterday.

There was also a still on Mugglenet along with this news. Here it is:

This is probably the scene in Slughorn's office where Ron drinks poisoned mead.