I've already posted about this... but in case folks are still looking for an easy way to learn about what's coming in Windows SharePoint Services 3.0 (btw - that is the final name) and Microsoft Office SharePoint Server (MOSS) 2007, check out the online clinics below. And yes - they are free right now.
Whether you're a customer or partner... I highly recommend checking them out!
WSS 3.0 Development: http://www.microsoft.com/learning/elearning/course/5045.asp
WSS 3.0 Infrastructure: http://www.microsoft.com/learning/elearning/course/3369.asp
MOSS 2007 Development: http://www.microsoft.com/learning/elearning/course/5046.asp
MOSS 2007 Infrastructure: http://www.microsoft.com/learning/elearning/course/3370.asp