According to a Japan's Macotakara, who was a reliable source in the past, the Apple's next-generation smartphone is already in mass production. Because of the similar design, the iPhone 5S, an unconfirmed new version of the iPhone will be run on the same assembly line as iPhone. The Apple's next-gen smartphone is expected to come in August.
On the other side, the fifth-generation 9.7-inch iPad and even a second-gen iPad mini may get unveiled in April. The iPad 5 will face a brand new casing matching the iPad mini while the 7.9-inch tablet will not come with Retina display. Apparently Apple is determine to keep battery longevity and sleek design.