Two days ago, we released the 2.1.1 update for VaultWiki. It includes a number of small bug fixes and other minor changes that should make, for example, the Protect tab a little easier to understand.
The big new feature in 2.1.1 is the ability to Moderate Edits via the History tab. Who follows edit moderation rules is configurable in the Usergroup and Forum Permissions Managers. 2.1.1 also includes the framework necessary for installing addons like VaultWiki Images.