Board Thread:Spoilers!/@comment-5899967-20150915143309/@comment-25703308-20150917050214

Will's story and Lily / Mal's are two different things. Will's  story was supposed to be told but it got pushed back (and aside) because they added Frozen.

This time the story goes as they planned it so if they say Lily's story will be explored then I kinda believe them.