Download SharePoint 2010 RTM

Finally you can download the RTM version of SharePoint 2010 from MSDN & TechNet site (only available to Subscribers).

Though you can download Microsoft SharePoint Foundation 2010 from Microsoft Download Center

Download Microsoft SharePoint Foundation 2010

Also the Final release of SharePoint Designer 2010 is available for download.

Microsoft SharePoint Designer 2010 (64-bit)

Microsoft SharePoint Designer 2010 (32-bit)