 <p>To have multiple Xcode instances installed you can put them to different folders for example /Developer5.0.2/Xcode, but to use them in CI or build environment(command line) you need to setup some environment variables during the build. You can have more instructions <a href="https://asile.digitalhusky.com/2015/05/25/multiple-xcode-versions-on-ci-node/" rel="nofollow">here</a>. So it is working not just with beta and fresh release, also it's working for the really old versions, you might need it to use with Marmalade or Unity plugins which is not support the latest Xcode versions yet(some times it's happens).</p>