https://www.techradar.com/news/ipad-pro-2018-rumors-heat-up-with-ios-121-beta-name-referencing-the-launch

There's even more reason to believe the iPad Pro 2018 is launching next month, and that's one just one of the juicy details being revealed by the iOS 12.1 beta.

The new iOS 12.1 developer beta specifically references 'iPad2018fall' as an identifier within its assets, strongly hinting at a forthcoming launch, according to 9to5mac.