By now, you would be aware that Apple has released its iPhone 11 series. Along with the iPhone 11 series, the latest version of iOS is also available. We are talking about iOS 13 which was announced by Apple at the WWDC 2019. While iOS 13 is still a few days away from releasing in the stable channel, we do have the iOS 13 GM or golden master build available. iOS 13 GM or any other GM builds from Apple are typically the final builds of any new version from the company. Thus, it is extremely likely that iOS 13 will also be the same as the iOS 13 GM build.
Now, it is totally up to you if you want to install iOS 13 GM build or you want to wait for the official release of iOS 13. However, there are many out there who would like to have the latest Apple iOS version on their phones. Therefore, this can be a very good option for such type of people who want the latest and greatest release.
One thing to note is that this iOS 13 GM build is different from concomitant beta testing of iOS 13.1 and iPadOS 13.1. Notably, the beta builds of iOS 13.1 and iPadOS 13.1 were also updated today. Now, it is not likely that we will see the release of iOS 13.1 instead of iOS 13 but we could well see a surprise.
For those who want to install iOS 13 GM build, you need to be running the latest version of macOS Catalina on your Mac device. Also, you need to have Xcode 11 GM installed as well. Apart from that, you need to be a registered developer to access iOS 13 GM builds. At the moment, iPhone XS, iPhone XR, iPhone XS Max, iPhone X, iPhone 8 Plus, iPhone 8, iPhone 7 Plus, iPhone 7, iPhone 6s Plus, iPhone 6s, and iPod touch 7th generation are the devices which support this iOS 13 GM build.