It certainly looks like the rumors of a 32GB Google Nexus 7 replacing the 16GB version and pushing it down to replace the 8GB version are accurate. The 8GB version of the Google Nexus 7 is no longer on the Google Play Store. This was probably done ahead of the official announcement we will likely get on October 29th. The add on the Google Play Store still has a "coming soon" tagline, but that doesn't necessarily mean it will be back.
Of course, we should know the whole truth on Monday, and will share are the details then, so stay tuned!
Source: NexusTablets.net via Google Play Store