Lots of work has gone into the new Patterns and Practices SharePoint Guidance. I'm very excited to see this content released and recommend it as required reading for all SharePoint Developers. Read Blaines announcement here. And read the guidance documents on MSDN here.
Also yesterday Chris Johnson published his PDC session demo. The talk was packed, as was the overflow room. It's a great demo and borrows branding from the Patterns and Practices SharePoint Guidance. Get the demo bits here.