The build server infrastructure for iOS, which has been open for testing on iosbuildservertest.appinventor.mit.edu, is now available on our production service at ai2.appinventor.mit.edu. It's still in beta for now, but everyone should consider migrating their projects from the test server to the production server. We plan to shut down the test server at the end of the year.
Cheers,
Evan W. Patton, Ph.D.
Lead Software Engineer, MIT App Inventor