Just been trawling through the postings by Tech Ed visitors and found these which are worth noting.
Andrew Connell points out that the Office Web Components are not being advanced anymore in favor of the Office Server components that will give server based spreadsheet type functionality.
Federal Developer points out to new BizTalk documentation and samples
This post has a great list of Sharepoint 2007 Web Parts. I particularly like the content aggregation parts that show lists of content and sites the user is a member of. Oh and all the cool KPI stuff of course. Thanks to Ian Morrish and Bill English for the pointer