iOS 11.4.1 beta 2 is released today. For iPhone and iPads. And it seemes to be an update to the previous beta 1. In terms of user downloads and user reviews. However, it still has bugs.
I myself have updated to the latest iOS 11.4.1 beta version. And it seems to be working fine as a daily driver. Except for a few issues.
Download iOS 11.4.1 Beta 2 iPSW for iPad
Download the latest iOS 11.4.1 ipsw beta 2 files for ipad models, from the links below. And get it free for your iPad .Without UDID or Developer account.