i do not see where is wrote the feature corresponding to D language? https://fedoraproject.org/wiki/Features/F17_D2_programming but i see it for Haskell...
i have look into: $ xdg-open file:///usr/share/doc/HTML/fedora-release-notes/index.html
Commit de14d216e0498e391c1638916a9913c041bfd348