Here are a few links to agile related sessions at GDC.
My talk - An Agile Retrospective
BioWare/Rich Vogel's 3 day roundtable - Agile Development – Is it the Silver Bullet? The Good, the Bad and the Ugly
There are lots of experience stories this year as well.
Transition to Scrum Midway through a AAA Development Cycle: Lessons Learned
Agility and Mobility: Applying Agile Practices to Mobile Game Development
The World within - Building Social Environments in EVE Online's Space Stations
"Using agile methodologies such as Scrum to navigate a unique production design paradigm, this project brings together a host of disparate disciplines including fashion designers, architects, industrial designers, artists, programmers, and game designers."
Writing Great Design Documents
"Discussion will also include how to manage design documentation in a project that uses Scrum, or other Agile philosophies."
How to Break All Rules and yet Make a 90+ Game