Microsoft Office 2010 Beta has been available for quite some time now, Alex has put together a nice post listing 5 reasons why you might want to consider upgrading to Office 2010.
Microsoft is offering Office 2010 free to some US partners and Office 2007 users. Microsoft has announced a program called Technology Guarantee under which users who activate their copy of Office 2007 between March 5th to September 30th will be offered free upgrade to Office 2010.
Purchase Office 2007, or a new PC with Office 2007, and activate it between March 5, 2010 and September 30, 2010.
Have, or create a Windows Live ID.
Redeem your Tech Guarantee before October 31, 2010 by visiting www.office.com/techg.
In a separate announcement, Microsoft is offering free copies of Office 2010 Professional as part of their Office Excitement Kit. This offer is bit a more restricted:
Available only to US Reseller and Distribution partners
One needs to complete three training courses at the Microsoft Partner university
Microsoft has already revealed Office 2010 pricing for the US and UK markets:
Office 2010 box art was leaked quite a while back and here are some box shots: