There is a blog that tracks the Tables of Contents of online, open access art history journals. The author of the site state that:
The aim of this blog is to collect the TOCs of new issues of open access journals in the field of art history. “Art history” is conceived here in a rather narrow sense. Although the header contains tabs like “Contemporary Art & Theory” or “Architecture” too, a comprehensive outlook on these fields is not intended. Periodicals of related disciplines are evaluated only if they have some art historical material too, this may however change in the future.