Half-Life 2: Officially Gold
There you go. Vivendi just made the announcement. Also, the "retail street date" was announced as November 16, which should mean that the game will be available both at retail and via Steam on that day. Also of note, this is the first game I've ever seen where there was a simultaneous worldwide release--Europe and Asia will also see the game at retail on November 16, which I assume is the result of competition from Steam.