Alan Gawthorpe & I a talk last month on doing architecture with agile teams:
We did the session agile-style: We had cards for our topics, and the 'customers' in the audience prioritised. I think it worked okay, it would probably go smoother doing it a second time. Some of the significant books & articles that went into the slides were:
Agile Methodologies for the Enterprise
What does a technical architecture for agile look like?
The further reading list
* George Fairbanks, Just Enough Software Architecture
* The UK government's national audit office report on Agile Governance