Later revisions added Intel Core i5 or i7 processors and Thunderbolt. Apple released a second generation MacBook Air in October 2010, with a redesigned tapered chassis, standard solid-state storage, and added a smaller 11.6-inch version. The MacBook Air was introduced in January 2008 with a 13.3-inch screen, and was promoted as the world's thinnest notebook, opening a laptop category known as the ultrabook family. Since then, the original MacBook's discontinuation in 2011, and lowered prices on subsequent iterations, made the Air Apple's entry-level notebook. The Air was originally positioned above the previous MacBook line as a premium ultraportable. The Intel-based MacBook Air is a discontinued line of notebook computers developed and manufactured by Apple Inc.