This is an exciting time to be working in the field of rock art research! Thanks to two main types of technology - chronometric dating techniques and DNA analysis - I think we will be on a wild roller coaster of new discoveries for the next couple of decades. Here are my personal predictions: more evidence for Neanderthal art, finding more sites to fill in the gaps between the main known groupings of art in places like W. Europe and Australia (e.g., the recent discovery of 40,000-year-old art in Indonesia, rock art in the Balkans, etc.), and starting to link the earlier African art-making traditions with the practices that spread out across the Old World with groups of people during the waves of out-migration around 60,000 years ago.
Genevieve von Petzinger