The new iPhones will be made out of Sapphire crystal, which is a scratch resistant material that's almost as strong as diamond.
There's another report from Japan on the iPhone 6 that says it's going to have a better FaceTime camera. It also says that despite the bigger screen, the new phone will be lighter than the 4-inch iPhone 5S.
Most of this is either common sense, or a reiteration of what we've been hearing for a while now.
It's worth noting, however, because the more reports pile up about Apple doing two big iPhones, the more likely it becomes.
Apple is the only phone maker with a 4-inch screen size on its main phone. Samsung, HTC, Nokia, and just about everyone else are in the 5-inch range.
Samsung has seen some success with its Note line, which is a 6-inch phone.
Multiple analysts say those giant phones are popular in Asia, and if Apple wants to grab market share in Asia, it needs a "phablet" (phone that's almost as big as a tablet).
It's looking like analysts (and many consumers!) are getting their wish.