People familiar with the second beta of iOS 6.1 indicated it is known as build 10B510c. It's compatible with the fourth-, third- and second-generation iPad, iPad mini, iPhone 5, iPhone 4S, iPhone 3GS, and fifth- and fourth-generation iPod touch.
The second beta of iOS 6.1 arrived Monday alongside a new Xcode 4.6 Developer Preview 2, said to be known as build 4H95e, as well as a new beta software release for the Apple TV set-top box.
As with the previous beta of iOS 6.1, the latest build enhances the Map Kit framework in iOS, allowing developers to search for map-based addresses and points of interest.
In one example provided to developers, users could search the string "coffee," and it would return the location of local coffee bars along with information about each one.
Relevance behavior rules have also changed with Passbook iOS 6.1 for boarding passes with both a date and location. Developers are encouraged to provide both piece of information, when appropriate, to make boarding passes relevant for a longer window of time.
Because it is beta software, a number of known issues remain with iOS 6.1. For example, Apple has notified developers that when browsing for TV shows in iTunes Store, options to view content by networks, genres and Genius recommendations are not available.
People who tested the first beta of iOS 6.1 indicated to AppleInsider that the software was relatively stable, aside from some crashing issues that were present when using the camera's panorama mode.
The last update to iOS arrived in the form of software version 6.0.1 earlier this month. It addressed a number of minor bugs with the software, including screen distortion, issues with the camera flash, and problems with Exchange.