Well, quite obvoiusly it'll overwrite it. You could have found that out simply by checking the file paths.
Quite obviously, huh? It isn't obvious from the installer script and I haven't spent the time studying it that it takes to determine what file paths will be built. I also haven't verified whether the file names are the same. There are hundreds of files in the tarball and I am not inclined to figure it all out, which is why I asked.
I actually wouldn't consider it to be "quite obvious" that a beta would overwrite a release. Good way to hose a production environment. The file paths I see in the tarball won't overwrite when the thing is untarred, and I wouldn't care if it did. I care about what happens on the install.