One game that took everyone by surprise during yesterday's Sony Gamescom presser was Rime. Most have already noted how it appears to be the perfect combination of "Ico" and "Wind Waker," and for a very good reason: because it totally does.
Though it also has heavy shades of Journey throughout as well:
Not much is known at the moment, other than its very pretty. Also how it's an open world game that has a strong emphasis on exploration.
Rime is by Tequila Works, whose only previous credit was the less than impressive Deadlight. Which was basically Shadow Complex, but with zombies, and also not that good. Perhaps second time's a charm?