Microsoft has release the beta versions of Office & Sharepoint 2010 on technet and MSDN
Microsoft Office 2010 will become available in a x86 and x64 version. Sharepoint 2010 will only be available in x64 version only.
Microsoft is planning to release the Microsoft Office 2010 products in Q1 next year (2010).
More information about the Office 2010 products on http://www.microsoft.com/office/2010/