An Italian hacker Luca Todesco exploited the iOS 9.3.3 beta.
He may release the Jailbreak tool for iOS 9.3.3 beta for the first time.
Watch the following demonstration video for Jailbreak iOS 9.3.3 beta 1 version. Please note still iOS 9.3.3 beta versions only available for iOS app developers
Video tutorial for jailbreak iOS 9.3.3
Download the unofficial Pangu 2.3 version
Still unofficial Pangu 2.3 software is not available for Public. Most of the time you have to wait until iOS 9.3.3 public release date. Don't try to search this tool on file sharing sites or full software sites. Some sites ask you to complete the online survey to download this tool, But you will nothing get after you complete the survey.
CydiaPlus.com offers you to download the iOS 9.3.3 unofficial Pangu jailbreak tool for 100% free from direct download links when Apple out the iOS 9.3.3 version.