The iPad Pro family is a line of iPad tablet computers designed, developed, and marketed by Apple Inc., that runs the iOS and iPadOS mobile operating systems. Its current generation is available in two screen sizes, 11-inch (28 cm) and 12.9-inch (33 cm), each with four options for internal storage capacities: 64, 256, 512 GB, and 1 TB. The first iPad Pro, the 12.9-inch version, was announced on September 9, 2015 and released on November 11, 2015. It is larger than all previous iPad models and the first iPad tablet to feature LPDDR4 RAM. The 12.9-inch tablet was later followed by the smaller 9.7-inch version, which was announced on March 21, 2016, and released on March 31 that same year. On June 5, 2017, the second generation iPad Pro was announced, which features A10X Fusion processors, with basic storage of 64 GB, and optional 512 GB. Upgraded displays include a 10.5-inch version to replace the 9.7-inch model, while the 12.9-inch version was refreshed. Following this announcement, both models of the first generation iPad Pro were discontinued. The third generation of iPad Pro was announced on October 30, 2018. It is available in two screen sizes: 11-inch (28 cm) and 12.9-inch (33 cm). They feature full-screen displays, with the 11-inch model replacing the 10.5-inch model of the previous generation. They also feature up to 1 TB of storage and Face ID which works in both vertical and horizontal orientations, a feature that does not apply to iPhones with Face ID. Due to not having Touch ID, these tablets are the first iPads to lack a physical button on the front.