Apple rolls out third beta version of iOS 12.3 for iPhones, here’s everything new

Apple has released a new beta version of its iOS 12.3 for iPhones along with new betas for Apple TV, Apple Watch and iMac/MacBook PCs. The third round of developer betas come for iOS 12.3, tvOS 12.3, watchOS 5.2.1 and macOS 10.14.5 can be tested by developers as they are already available to download via OTA service. These are not for end users and the final version might take some time to see the light of the day. However, those who are a part of public beta version can get the new version soon after the developer beta is rolled out.
As mentioned by Apple Insider website, the third developer beta of iOS 12.3 and tvOS 12.3 feature redesigned Apple TV app that is likely taking place to make way for incorporating Apple TV Channels and Apple TV+. There are some changes in the Wallet app as well (most probably for the upcoming Apple Card).