InfoPath 2003 SP1 Preview released today!  Locations:

·         http://www.microsoft.com/downloads/details.aspx?FamilyId=D5ADC839-73F4-4299-ABA0-E88C90B25144&displaylang=en for the main preview.

·         http://www.microsoft.com/downloads/details.aspx?familyid=7E9EBC57-E115-4CAC-9986-A712E22879BB&displaylang=en for a Visual Studio plug-in to help make managed code business logic authoring easier.

Some of the new features (ones close to my team's hearts bolded):

• More control choices, including Master/Detail, File Attachment, Recursive Section, and Choice, as well as custom-authored controls..
• Better schema support, including built-in support for schema changes.
• Printing improvements, including page breaks, margins and print settings.
• Improved e-mail deployment of sandboxed solutions and auto-updating of trusted solutions.
• Better management and categorization of solutions.
• Tablet PC support improvements.
• Increased support for rules and roles for declarative business logic.
• Enhanced XPath expression support, including calculations without writing script.
• Additional data adaptors for email and SharePoint Products and Technologies lists.
• Better support for custom migration plug-ins.
• Enhanced Object Model (OM), including OnSave event, offline state, submit, and digital signatures.
• Improved support for secondary data sources.
• Additional support for business logic written in managed code (requires a separate download).
• Enhanced OM for external automation and windowless mode for application-level calls.
• Better support for ADO datasets and diffgrams to round-trip data changes.
• Additional support for complex scripts, such as right-to-left and South Asian languages.
• Enhanced support for digital signatures, including partial signatures, non-repudiation, co-signing, and counter-signing.
• Improved stability and performance, including auto-save and data recovery.