Jailbreak iOS 8.3 via TaiG jb utility. Apple released the iOS 8.3 for iPhone, iPod touch and iPad. Test developers release is available on the company website in the Dev Center. UPDATED.
25PP has released their own PP Jailbreak for iOS 8.3. You can download PP jailbreak for iPhone, iPad and iPod Touch running iOS 8.3 from the download link below.