Apple released 6 beta iOS 11 for developers. The system can be installed on iPhone, iPod touch, and iPad.
The size of the update for iPhone is around 280 — 300 megabytes.
iOS 11 compatible with the following devices: iPhone 7, iPhone 7 Plus, iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone 5s/ SE, iPod touch 6G, iPad with Retina display, iPad Air, iPad Air 2, iPad mini 2/3/4, iPad Pro.
Download the sixth beta of iOS 11 can be directly on the iPhone or iPad. Public Assembly will be released in the coming days, and release the final version of iOS 11 will be held in September this year.