Just a smattering of bug fixes this go-around.
Release candidate, thought we'd never make it. Barring unforeseen circumstances, expect the final release of OmniGraffle 4.2 (and the last Graffle 4 release as we start in full on OmniGraffle 5) real soon now, like proabably next week.
Download OmniGraffle 4.2 rc 1 and read the latest release notes here.