The Cupertinians' support page now says that iOS 8.0.2 is currently in the works and will fix the aforementioned issues. In the meantime, as a temporary work-around, the page gives users a step-by-step guide on how to downgrade to vanilla iOS 8 (yes, a guide to downgrading already existed, though it's good to see Apple come up with an official one).
It hasn't been a good couple of days for the new iPhones. First, there's the #bendgate fiasco, now – the iOS 8.0.1 blunder. Still, the devices have been selling out like hot cakes and it's doubtful that these hitches will put a serious bump on the road for Apple.
source: Apple via iMore