User blog comment:The Milkman/Hearthfire Announcement: My Take/@comment-90.215.96.212-20120903213006/@comment-5469467-20120904070931

It's interesting to note that there are are also a few PC mods for arrow crafting and dragonbone weapons; both of these features were released with Dawnguard. Either great minds think alike, or Bethesda is taking some ideas from modders and releasing them accross all platforms. And, like Milkman said, Bethesda can put their resources behind these features to maximise the quality.