Lekan is correct. We've added at least one major product feature every time we've had a hack week. There are also usually a few featurelets each year that start as hack week projects.
When I first started, I worked on Palantir Mobile, which had its origins in 2010 hack week. I was on the Palantir Video team that won last year and Doing It Live this year, both of which have become features under active development.