Apple today seeded the first beta of an upcoming iOS 9.2.1 update to its public beta testers



From MacRumors:

Beta testers who have signed up for Apple's beta testing program will receive the iOS 9.2.1 update over-the-air after installing the proper certificates.

Those who want to be a part of Apple's beta testing program can sign up to participate on the company's beta testing website, which gives users access to both iOS and OS X betas.

  Apple Releases First iOS 9.2.1 Beta for Public Beta Testers