Any good recent overviews on theories of vagueness?

Near the end of summer the LSU philosophy reading group is going to begin reading things on vagueness. We're going to start with Rosanna Keefe's excellent Theories of Vagueness, which gives an excellent overview of the state of the field circa 2000.

We don't really know where to go from there, since so much has been done in the ensuing 14 years. Are there any more recent books that achieve what Keefe managed, presenting an overview of the state of the field? Barring that, are there a handful of more recent canonical texts that one must cover to get reasonably up to date? Any help would be greatly appreciated.