Yesterday, I had a good meeting with Cory Linton and other members of Microsoft's Tablet PC SDK. A Tablet SDK 1.5 is now available on MSDN. The major additions are a PenInputPanel which pops up a dedicated input window very near a normal WinForm control, which should allow for very fast porting / creation of form-centric applications, and an InkDivider object which essentially parses an arbitrary area of ink into paragraphs, text-lines, drawings and so forth.
If you've been reading this blog for any amount of time, you know that I think that mobility is the place for big productivity wins this decade. This is still ahead-of-the-curve stuff, meaning that now is an opportunity for bold and daring programmers to launch companies.
In case you missed it, here's a 5-minute video demonstrating how easy it is to code the TabletPC starring yours truly. (It was my first experiment with a program called Visual Communicator -- be kind.)