This release was unusually delayed, but future release should be more frequent again. To quote the release announcement http://www.haskell.org/pipermail/haskel

This release was unusually delayed, but future release should be more frequent again. To quote the release announcement http://www.haskell.org/pipermail/haskell/2014-August/024284.html http://www.haskell.org/pipermail/haskell/2014-August/024284.... (Mark Lentczner): "I realize this one was a long time a'comin'. I take the responsibility for the decisions that lead up to being this late, including deciding it was worth it to wait for GHC 7.8, and that this was the right time to re-write the platform build system. I hope the speed that we can now turn the platform will be evident in future releases."