Over night the team have released the SharePoint, Office, Visio and Project 2010 RTM installers onto MSDN. If you have an MSDN subscription you will now be able to download them and start using them within you Development and Testing environments. Please remember that MSDN does not cover you for production use. See my previous post Office, SharePoint, Project and Visio 2010 have made RTM! for information on when you will be able to get full licensed versions for Production use.
SharePoint Designer 2010 RTM (32 and 64 bit) is available from the Microsoft Download Center.
(32 bit) http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=d88a1505-849b-4587-b854-a7054ee28d66
(64 bit) http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=566d3f55-77a5-4298-bb9c-f55f096b125d
Of interest also is the Office Web Applications installer that is also available on MSDN. Happy SharePoint-ing…
SharePoint Designer x86 RTM can be downloaded from MS directly at http://www.microsoft.com/downloads/details.aspx?FamilyID=d88a1505-849b-4587-b854-a7054ee28d66&displaylang=en