French movie site Allocine has listed Harry Potter and the Deathly Hallows: Part II to be released May 1, 2011. It is unclear if this release date is only for France, or if it is the slated date for any other countries, including the US and UK. Please regard this as a rumour, especially since the first of May falls on a Sunday, until we hear confirmation from Warner Bros.

Thanks to Pottermaniac.net for the tip!