Adobe Apollo public alpha release is now at Adobe Labs (http://labs.adobe.com/wiki/index.php/Apollo).

You can reach release notes to get more information about the current release.

You can download and install on your Windows or MacOSX platform.

Here are some other useful Apollo links:

Free Apollo Training From Lynda.com

Sample Applications

http://labs.adobe.com/wiki/index.php/Apollo:Applications:Samples

Apollo Camp San Francisco

http://labs.adobe.com/wiki/index.php/Apollo:Camp:03162007

Apollo for Adobe Flex Developers Pocket Guide

http://labs.adobe.com/wiki/index.php/Apollo:Books:Apollo_for_Adobe_Flex_Developers_Pocket_Guide

Apollo Forums