1. Office 2010 will be available in both 32-bit and 64-bit versions.
2. Office 2010 will run on Windows XP SP3, Windows Vista, and Windows 7.
3. You don't need to replace hardware that is capable of running 2007, it will support Office 2010. Like Windows 7 has demonstrated, we realize that taking advantage of the hardware you already own is just as important as supporting all the new technology coming out.

Microsoft Office 2010 is the next version (as of April 2009) of the Microsoft Office productivity suite for Microsoft Windows. It entered development during 2006 while Microsoft was finishing work on Microsoft Office 12, which was released as the 2007 Microsoft Office System.Office 2010 will be more "role-based" than previous versions.

Office 2010 will implement the ISO compliant version of Office Open XML which was standardized as ISO 29500 in March 2008. Microsoft plans to offer a Web-based version of its Office productivity suite, known as Office Web, that will debut with the release of Office 2010 Office Web will include online versions of Word, Excel, PowerPoint and OneNote.

Below, we have tried to cover some of the common questions that we are anticipating on this topic. If we missed something please let us know in the comments. Anything that we can share at this point, we will.

Q: What is technical preview?
A: Technical preview is an engineering milestone leading towards RTM that Office 2010 and related products will reach in July 2009.

Q: Will customers or partners be given access to the products at the technical preview milestone?
A: Beginning at the technical preview milestone, we will conduct an invitation only technical preview program where participants will able to experience Office Professional Plus 2010 and Visio 2010. You can sign up to be on the list for entry at office2010themovie.com.

Q: Will I need to upgrade hardware to install Office 2010 and related products?
A: Office 2010 Suite products are offered in both 32-bit and 64-bit versions so customers will not be required to upgrade 32-bit PC’s and Laptops to 64-bit hardware to run Office 2010 Suite Products. Certain hardware configurations and operating system versions customers currently have deployed may require an upgrade to run server and client products.

This is unofficial leaked version of Microsoft Office 2010 Technical Preview. Full version will be released in late 2009 OR early 2010.

Instruction:
First download RAR file from below, the according to your OS bit version download the Microsoft Office 2010
Microsoft Office 2010 x86- 32 bit version- Size: 1.3 GB
Microsoft Office 2010 x64- 64 bit version- Size: 1.5 GB

Files are in ISO format so use Daemon tools OR Power ISO to mount image and install!!

Download:
32 BIT-

64 BIT-