[MobileVet]

I started downloading the dmg manually quite a few years back... and have never adopted the AppStore version. So painful.

This SO post is continually updated with the latest builds and is a bookmark for me. https://stackoverflow.com/questions/10335747/how-to-download...

[anaerobicover]

You might also like https://xcodereleases.com/ which is updated automatically.

[saagarjha]

I believe it is actually updated manually.