Yesterday, we saw a surprise seed of iOS 10.2.1 to developers, just two days after the public release of iOS 10.2. On Thursday, Apple made the minor update available for folks participating in the company's public beta testing program. As mentioned before, iOS 10.2.1 is a minor update containing a series of bug fixes and stability improvements in the background. Since its developer release yesterday, folks who have updated to the new firmware have yet to find any outside changes. Folks signed up with Apple's Beta Software Program can head over the Settings > General > Software Update to install iOS 10.2.1 beta 1. Of course, the device will need to have Apple's Beta Software Program configuration profile installed.