Update: Dragon Age 3 and Half-Life 3 appearing on the Gamescom-compiled list of games at the show was "a mistake", the organisers have told Eurogamer.
Eurogamer asked three times why the names were listed, but no explanation was given.
Original story: Half-Life 3 will be at Gamescom this week, according to the official Gamescom website.
A list of all games to appear at the show included Half-Life 3 and Dragon Age 3 - the as yet unannounced game BioWare is assumed to be working on.
The validity of all this is uncertain. Translated (via NeoGAF), the document provides the following caveats: "'Expected announcements gamescom 2012'. *Please take note of the sources: exhibitors, media, intenet forums, blogs. *no responsibility is taken for the correctness of this information."
Valve does have a fondness for the German PC-leaning show - could it really be about to announce one of the most anticipated games in history?