<P> The iPad Pro family is a line of iPad tablet computers designed, developed, and marketed by Apple Inc., that runs the iOS mobile operating system . It is currently available in two screen sizes, 10.5 - inch (27 cm) and 12.9 - inch (33 cm), each with three options for internal storage capacities: 64, 256, or 512 GB; the 512 GB configuration making iPad Pro the first iOS device to offer that storage size . </P> <P> 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 . </P> <P> On June 5, 2017, a second generation of iPad Pro was announced, which features A10X Fusion processors, with basic storage of 64 GB, and optional 512 GB . Upgraded displays include a new 10.5 - inch version to replace the 9.7 - inch model, while the 12.9 - inch version was refreshed . Following this announcement, the first generation iPad Pros, both 9.7 and 12.9 inch, were discontinued . </P> <P> The 12.9 - inch version of the iPad Pro was announced during an Apple Special Event on September 9, 2015 . It was released on November 11, 2015 with gold, silver, and space gray color options . Prices ranging from US $799.99 to $1,229.99 based on storage size and cellular connectivity . On March 21, 2016, the 9.7 inch version of the iPad Pro was announced at an Apple keynote with an additional rose gold color option . The 9.7 inch version also introduced the ability to choose base 32GB Model with Cellular + WiFi option . (Previously, Cellular + WiFi option was only available on 128GB iPad Pro models .) The 9.7 inch model is priced from $599 to $1,129 depending on the configuration . It was released on March 31, 2016 . </P>

How many generations of ipad pro are there
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