InfoPath.NET
Robert McLaws notes:
"InfoPath installs with a PIA (Primary Interop Assembly) in Office 2003 Beta 2. This allows you to deal with InfoPath from .NET."
Good deal. I was not aware of this.
Update from Robert (March 19, 2003): "It's an option that is not installed by default, you have to select the "Custom Installation" Option, then select "I want to customize my options" on the next screen. If you look at the feature tree, the .NET PIA's are the first option in each product. This is, I feel, the strongest statement yet that MS is committed to .NET interaction across the entire company. "