Office 2010 looks like a smooth transition for those used to 2007
http://www.pcmag.com/article2/0,2817,2350052,00.aspMicrosoft today released a "technical preview" release of Microsoft Office 2010, the next version of the world's most widely used application suite. The beta is available to anyone who preregistered with Microsoft for a chance to download and test it. After running it for a few days of intense testing, I'm impatient for the final release.
As far as I can tell, this should be the smoothest upgrade for Office in many years. If you're used to Office 2007, you'll need no help using Office 2010. Old features remain where they were, although some are now displayed on spacious menus with lots of explanatory text instead of the cramped menus of 2007. In fact, the new features are slotted in so smoothly that it may take you a few moments to realize that they're new.
You'll see major changes in the new version if your company also updates to SharePoint Server 2010. Office 2010 is packed with features that let SharePoint users edit and manage each other's files either through an internal connection to a SharePoint server or remotely through a Web browser or smartphone. Microsoft's obvious goal is to persuade corporations to pay for Microsoft's collaboration tools instead of using those from Google or any other cloud-based service. Microsoft's look technically dazzling, but it's an open question whether Microsoft can convince companies to lock themselves into a high-priced proprietary offering in a time of economic uncertainty.