The following products are available for download.
Microsoft Visio Premium
Microsoft Office 2010
Microsoft Exchange 2010
SharePoint Server 2010
Project Server 2010
Office Web Applications 2010
Microsoft FAST Search Beta
SharePoint Designer 2010
The link to download them is given below
The announcement: http://www.microsoft.com/presspass/features/2009/nov09/11-18PDCKurtDelBene.mspx
The announcement: http://www.microsoft.com/presspass/presskits/2010office
Last night I installed the beta bits on my Windows 7 64bit. SharePoint 2010 is working nicely. Although I faced many problem but thanks to Microsoft bloggers for providing instant help on these problems.