https://wccftech.com/ios-12-beta-8-released-heres-what-you-should-know/

Apple has just released iOS 12 Beta 8 for iPhone, iPad and iPod touch developers. In case you’re wondering why this beta has been released, keep on reading.

Apple released iOS 12 Beta 7 earlier this week only so that it can pull it from developers a few hours later. Why did it do that? Well, the seventh beta was marred with serious performance related issues on devices across the board. So in order to stop the chaos from spreading to every single device out there, Apple had to pull the plug on it.