Public testers and developers can install a new iOS release.
The company is now rolling out the third Beta of iOS 12.1.3. to members of the Public testing programs as well as those registered as developers. The update doesn’t add anything new, but under the hood, there could be some fixes and performance improvements you might notice in terms of smoother and less buggy experience.
While Apple is yet to unveil when the final iOS 12.1.3 will hit the general public, you can join the Beta program and install this update ahead of the general release. Keep in mind that some unwanted bugs and issues might be encountered during the testing period.
iOS Betas can be downloaded as an OTA update, or via the Developer Center.