In my opinion, a very interesting book. As I haven't yet sat my exam for IPMA, I can't swear on that everything is relevant from that perspective, but I like it as a generic book that manages to cover a lot of ground in a (relative) short space. Be warned, though, that if you're not interested in Project Management, it may feel like a waste of space…

Anyway, a good read for anyone that wants a view of what project management really is about, organised from an ICB perspective.