User blog comment:Besteverunited/Do you think after the tartarus arc there will be a break in the anime or is the new manga arc designed for this reason?/@comment-26014116-20150227032951

Fairy Tail seems like one of the anime's that wont go on break. So they might do Ice Trail or Fairy Tail Zero since they are past and would add to the story without worrying about messing anything up.