I don't mean to be critical, but many of you just need to learn how to roll with the wind. Any good admin will have a backup plan - but speculating and complaining on a forum isn't going to scare away the beast.
The Zimbra community and staff has always been good to each other, and I'm sure there will be a workable solution to whatever comes out of this. Mergers and acquisitions are an inevitable part of living in a capitalist economy.
Haven't any of you seen Hitchhiker's Guide to the Galaxy? If you haven't let me share something with you:
DON'T PANIC! Keep over-thinking this one, and you might just disappear in a puff of logic, QED.
If anything, maybe we ought to express a little concern for the people who put their blood, sweat, and tears into Zimbra over the last few years, and hope they still have jobs in the next few months/years/whatever.