Like a lot of people out there wondering if SharePoint 2010 is worth the upgrades, all I have to say is a big YES. I have been playing around with the beta and the usability improvements are a big plus. Not sure how much I can talk about it, but we are busy at Extended Results building our practice around the new product features and assisting companies in the upgrade next year. It is going to be another exciting year with this ships!
More information can be found at http://blogs.msdn.com/sharepoint/archive/2009/07/13/announcing-sharepoint-2010-technical-preview.aspx