Xanpan is...a cross between XP and Kanban...is an example of a roll-your-own method...is distilled from Allan Kelly’s own experiences running development teams and then helping multiple teams adopt Agile working methods and practices.
Xanpan draws ideas from Kanban and Lean, XP and Scrum, product management and business analysis, and many other places.
Allan tells the Xanpan story through a series of boards which tell the story of different teams.
In between he fills in the principles, practices, and thinking which together constitutes Xanpan. Allan's key points include: Handling planned and unplanned work in fixed length iterations, the importance of keeping quality high with technical practices, planning beyond the iteration and why deadlines are more important than estimates.