The main thing I wanted from the Microsoft Mobile Platforms Division Partner Briefing was simple numbers: how large is the Tablet PC market? That, ultimately, is what determines the market for Tablet UML.

And the answer is: 1,000,000 Tablet PCs shipped so far, with 850,000 expected to ship in 2006.

Bonus numbers: 300 known Tablet PC apps in production, 125 of which are for sale on Handango, an online site specializing in software for mobile devices. Those 125 come from 30 ISVs. Maybe I should make that 31.

Now I can start calculating market potential...

We have a new video up at TabletUML.com. It's in line with the "show, not tell" school of communication. I find that I can talk about Tablet UML all day long without making an impression; but if I just start drawing, people get the point, and some of them get excited.

This video was created with Camtasia Studio Screen Recorder. Josh Holmes recommended it, and I have to thank him for that. Camtasia Studio creates much smaller videos than other tools I have tried. More important, it doesn't slow down the performance of the system while it's recording, so the videos look natural. It's a great tool.

And for those who are interested: that video is of Tablet UML 1.5 in action. It should be available within the week. I distributed copies at the Microsoft Mobile Platforms Division Partner Briefing this week, and I'll update the Web site shortly.