A U.S. carrier source tells Reuters iPhone 5C pre-orders haven't been "overwhelming," and that supply for both the 5S and 5C has disappointed. Multiple reports emerged yesterday of tight 5S inventories.
Hit-and-miss Digitimes reports the 5th-gen iPad and retina iPad Mini will join the iPhone 5S in having sapphire home buttons (presumably with fingerprint sensors underneath), and that iPhone 6 will "possibly" feature sapphire touchscreen cover glass.
Sapphire is thinner and more scratch-resistant than current cover glass solutions such as Gorilla Glass, but is also much more expensive.
Also: Apple chairman and former Genentech CEO Arthur Levinson has agreed to become the CEO of (and an initial investor in) Calico, a Google company set to work on anti-aging technology. Tim Cook provides some high praise for Levinson in the PR.