The InfoPath team blog just posted a list of new features for InfoPath 2010, including screenshots:
Amongst everything else is this little snippet:
“Controls and functionality that are now supported in browser forms include:
- Bulleted, numbered, and plain lists, multiple selection list boxes, Combo boxes, Choice group and sections, and Filtering functionality.”
That last piece is the most fascinating for me. No other detail was provided in the post, but it seems that if filtering is supported then cascading list boxes are become possible without having to write code. Excellent!