I find it interesting they'd get in to this space. Companies offering this, like Klarna, are already starting to get a bad rep in the press (thye're being framed as similar to the old online payday loan companies like Wonga). Could be quite detrimental to Apple's image (particularly among the people who end up in debt to them and unable to make their payments). I personally think it's a great service but I don't see what Apple gets from getting involved (they already had pay-later via PayPal/Barclays etc for their own products).