For those of you who were fast enough at the beginning of November to get the buggy app might want to consider this:
If you already have the Gmail app 1.0.1 released on 2 Nov, you will need to uninstall or log out of the old app prior to installing the new app.
Anyways, it’s back in the App Store and probably as “unimpressive” as the version from two weeks ago.
Oh and of course they have another blog post about it, too.