To be noticed in the art world an artist must do something bold and new. Impressionism was bold and new (avant-garde) but is now considered very traditional. Art has been around for over 40,000 years, and artists are looking for more outrageous ways to gain acclaim. One way to do this is to use a different medium to create art or use it in a different way. Food, resin, plastics, cloth, wax, and even bodily fluids are being used to create artistic pieces. The subject matter is changing too. Ideas are the subjects of art. Many pieces are social commentaries of our tumultuous times, and celebrity caricature are gaining in popularity. So much has been done in the realm of art it is getting more and more difficult to find something that is inventive.
As soon as Jackson Pollock abstracted abstract art in the 40's and Andres Serrano used his own blood in the 80's the question has been 'what can happen next?' I have two thoughts.
Technology is being used in all aspects of the art world: music, film, and fine art. PhotoShop is very popular in creating works. Many artists are using computer algorithms to create abstract pieces. I feel like a lot of the art in the next 100 years will be done by or with the use of computers and robotics.
My other hypothesis is that artists will revert back to the more traditional styles. Like different decades fashion coming back into style, I can see the comeback of Neo-Classicism and Romanticism. It is difficult to gauge where art is headed, but one thing is for sure, it will always be there being both hated and LOVED!