Those of you who enjoy gamebooks should be anticipating the release of Joe Dever's Lone Wolf. The first part of four will be due out in November, and just in time for Gamescomm there's a teaser trailer.
It looks like aside from your normal gamebook choices, there are puzzles to solve, and the combat looks a little Infinity Blade-ish. We'll keep an eye on this as any news develops.
And this should be the first in quite a few unvelings at Gamescomm this week.