Office 2010 Technical Preview is out on the web everywhere in both 32 and 64 bit flavors. This is in fact the first Office version to be made available in both 32 and 64 bit versions. The leaked SKU of Office 2010 Build 14.0.4006.1010 is Professional Plus which includes:
SharePoint Designer 2010
SharePoint Workspace 2010
I have it installed here on a 64 bit Windows 7 RC machine and so far the experience has been nothing short of awe-inspiring!!
Screenshots from Office Professional Plus 2010 x64
This leaked build of Office 2010 is missing the JumpList feature for Windows 7 which was recently spotted by Imran but it may be limited to this leaked build only and we may actually get to play with it come the official Technical Preview release this July.
UPDATE: Just tried Office Outlook 2010 and it seems to be the only Office app currently to have Windows 7 JumpList feature integration as can be seen from the screenshot below: