Maybe John has been asleep at the switch, but this is one of the first vegan beers we have seen come down the pike. Rebecca’s Divine Wit is Vegan Beer Brewed with Oranges and Coriander.
Wikipedia (not Wikileaks) says veganism is:
a philosophy and lifestyle whose adherents seek to exclude the use of animals for food, clothing, or any other purpose. Vegans endeavor to never consume or use any animal products of any type. The most common reasons for becoming, or remaining, vegan are moral conviction concerning animal rights or welfare, health, environmental concerns, and spiritual or religious concerns.
I suppose some beers have a bit of animal matter, in the form of isinglass or gelatin. This site explains and provides a helpful guidepost. So far as we know, TTB treats this term more like “biodynamic” or “premium” and less like “organic” or “Meritage.” Perhaps, when there are more vegan labels for alcohol beverages, the policy will get more clear. For a wine example, here is Flint Hills Red Wine (“for vegan enjoyment”).