The moment everyone has been waiting for... Community Server v2.1 Beta 1 is now available for download.  We've also posted Beta 1 builds of the News Gateway, Mail Gateway, and FTP Gateway add-ons in both .NET 1.1 and .NET 2.0.  So download them too.  There is also a Beta 1 release of the Security Modules (Windows Authentication, Forms Authentication, and Cookies Authentication), though the only notable change since v2.0 is to Windows Authentication... there is a fix to allow internal trackbacks to work properly (must have CS v2.1 for them to work, the new release won't completely solve the issue for CS v2.0).