For anyone interested in using Lean/Kanban processes for software development , there is a new conference specifically for this in May.  The conference is focused on how different companies are using Lean approaches, and has a specific Kanban track, for software development.  There is also a more general Lean track with keynotes by Dean Leffingwell, Alan Shalloway and David J. Anderson.  The link is http://www.leankanbanconference.com/ 
Enjoy and hope to see you there!