Q: In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
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.
A:
how many generations of ipad pro are there