A new version of SharePoint Guidance is avaiable here:
http://www.microsoft.com/downloads/details.aspx?FamilyId=C3722DBA-6EE7-4E0E-82B5-FDAF3C5EC927&displaylang=en
This guidance helps architects and developers build SharePoint intranet applications. A reference implementation (RI) demonstrates solutions to common architectural, development and lifecycle management challenges.This guidance discusses the following:
- Architectural decisions about patterns, feature factoring and packaging.
- Design tradeoffs for common decisions many developers encounter.
- Implementation examples demonstrated in the RI and in the QuickStarts.
- How to design for testability, create unit tests, and run continuous integration.
- Set up of development, build, test, staging, and production environments.
- Managing the application life cycle including upgrade.
- Team-based intranet application development.
The following areas are not discussed in this version of the guidance:
- Content-oriented sites that use Web content management
- Internet and enterprise-scale SharePoint applications
- Multilingual SharePoint applications
- Scale or security testing of SharePoint applications
More information about this you can find here: http://www.codeplex.com/spg/