Major Nelson tweeted that Xbox will indeed be at Gamescom, the largest trade fair and event highlight for interactive games and entertainment in Cologne this August.
You can view the official tweet below:
[Blog Post] Yes, Xbox will be at @gamescomcologne this year – mjr.mn/11nQZVA
— Larry Hryb (@majornelson) May 9, 2013
You can view the official Gamescom website here.