VaultWiki 3.0.18 is out now. This maintenance release contains a number of bug fixes including some critical issues involving edit rollback and moderation. For any sites that utilize the wiki's history functions, which should be most, you should upgrade as soon as possible to avoid accidental data loss.
To fix some CSS class stacking issues, wiki images have also been given a complete style reboot. You may need to adjust the CSS again to get them working with custom styles.
As always, for a list of updated templates and phrases, see: https://www.vaultwiki.org/threads/2109/