First introduced in September, Xcode's continuous integration feature is designed to allow developers to create bots that run on a separate server, continually building apps, executing test suites, and searching for potential bugs, ensuring that apps are always in a releasable state after code changes.
As an iOS developer, you can now take advantage of continuous integration in Xcode by creating bots with OS X server for Mavericks that automate the process of building, analyzing, testing, and archiving your apps.Xcode can be downloaded from the Mac App Store for free. [Direct Link]
As the bots do their work on the remote Mac, Xcode on your development machine displays the build and test reports. Bots can generate a regular release for your QA team, be configured to execute on every check-in, and even test your apps on connected iOS devices.
OS X Server can be downloaded from the Mac App Store for $19.99. [Direct Link]