In contrast to my post yesterday about the ArcGIS Explorer public beta (this snapshot release is a closed beta), a new “snapshot 1” beta is available for download from the ESRI beta site to those in the 9.2 beta program. I don’t see any release notes, but it appears to be similar to the version demoed at the Developer Summit last month. I guess keep an eye out on the ESRI beta forums for what is new and what to test as this is a closed beta so you can’t get any info from this blog.
Update - Actually the “What’s New” has been posted to the ESRI beta forums in the ArcGIS Explorer section. Take a look.