Surprising because of how early she went out but not so surprising considering her vocal ability and sound for a 14 year old.
Kinda surprised that Syco are in on the deal but Hollywood Records signing her kinda fits seeing as Miley Cyrus (think she may have joined a Sony label now), Demi Lovato and Selena Gomez are all grown up now and releasing more mature music. She's probably seen as a replacement for them.
Also surprised that Syco are teaming up with Hollywood Records seeing as they're distributed by Universal but perhaps this is a sign that Disney are ending that relationship to work with Sony instead.