Another round of bug fixes and stability issues taken care of, somewhat related to shared layers and canvases in the sidebar, among other factors.
I neglected to point out last time that the licensing code has been modified to match that of OmniFocus, meaning that a single license key will now allow one user to run OmniGraffle on two computers simultaneously, so that should make some users out there happy.
Download at the beta page, and read up on release notes.
Cheers!