Maybe I'm expecting the wrong thing, but as someone not involved in development with Haskell, this landing page gave me nothing to go on.
"The Haskell Platform is the easiest way to get started with programming Haskell. It comes with all you need to get up and running. Think of it as "Haskell: batteries included". Learn more..."
With a link to this page: http://www.haskell.org/platform/contents.html