You can still get all the slides that are used on the Professional Developer Conference 2005 right here.
What I picked up by browsing the PDC 2005 site:
- Workflow engine now has material online. Nice article by Dino Esposito and another intro here.
- Atlas (i.e. AJAX development) at ASP.NET website.
- Microsoft Expression products: third attempt to get into the graphics and designer world, after two failed attempts with Microsoft Liquid Motion and Vizact 2000.
- After Visual Studio Tools for Office (VSTO) there will also be a Tools for Applications (VSTA). This will bring the .NET equivalent of what Visual Basic for Applications (VBA) brought us in the COM age.