Apple has updated its TestFlight app to version 1.1.1, adding support for Apple WatchKit apps embedded inside beta iOS apps.
TestFlight lets you install and beta test apps on an iOS device. After a developer invites you to beta test their app, you can install new versions as they become available. TestFlight also allows you to provide feedback to developers on the features you are testing in the prerelease apps you’ve been invited to.
With TestFlight 1.1.1, developers can deploy beta versions of their iOS apps without removing the Watch extensions. It’s a free download at the Apple App Store.