In an interesting conversation with Eric Rogers, the creator of the Skylanders Academy series, he let drop that apparently Josh is back as Story Editor for MLP. Considering that Josh moved on from Skylanders after S1 was completed in May of last year and that we know the Lady Writers are story editing this season it sounds like Haber is back for season 8.
Not only that it appears he is sharing the role with someone (or someones) else. We'll have to see if we can get confirmation anywhere else!
Thanks to Raffaele for sending it in! Find the whole thread below.
Source
Twitter: Calpain