Just a few days after it was released to developer testers, Apple has seeded the first public beta of iOS 12.1.2. The new build is now available to those who have devices registered in the Apple Beta Program. That program is free and you can get more details here from Apple.
iOS 12.1.2 is best characterized as a maintenance release. It is mainly focused on fixing bugs and performance issues found in version 12.1.1 which was released last week. So far, no new features have been found in the build which isn’t surprising. If there are any new features, they will likely be tweaks to existing ones. Equally, this release for the Apple public beta program members is the same as the developer build from last week.
As for when we can expect to see this new version of iOS released for the general public, that isn’t clear. Apple never publishes estimated release dates on beta software but history is a solid indicator of when to expect it. Generally, for these minor releases, Apple will go through four to six beta releases. Those releases usually happen a week apart from each other. Doing the maths, that means we could see somewhere between January 7 and January 21, 2019. That is subject to change based on any bugs or user feedback that happens in the beta cycles.
Finally, Average Apple Guy does not recommend you install this beta of iOS 12.1.2 on your production or “Daily Driver” iPhone. You could run into a bug or issue that impacts your productivity or the stability of your iPhone. It is best to run it on a non-daily use iPhone.