The new certificate arms to your jailbreak iOS 9.3.3 and make the jailbreak last for 365 days long.
Update: 1-Year Enterprise Certificate has introduced in jailbreak iOS 9.3.3 replacing 7-days certificate expiry feature with new Pangu Download. The process still goes semi-untethered where user have to re-run the jailbreak app every time you reboot. In that way updated iOS 9.3.3 Pangu Download now supports Windows, mac and Linux across 64-bit device range. The team thistime drops limitations from Windows-only and on the other hand adding English language support.
Pangu released an updated English version for iOS 9.2-iOS 9.3.3 jailbreak days after Pangu 9.3.3 tool release with PP jailbreak assistance. Pangu iOS 9.2 - iOS 9.3.3Download for Cydia Download (English version)