S.T.E.A.M. is essentially S.T.E.M. 2.0.
S.T.E.M. stands for Science, Technology, Engineering, and Math and was all about understanding how these different subjects interact and are completely reliant upon one another. It is often taught with hands on application to truly appreciate the interconnectedness of these topics and develop a much deeper appreciation for them as well as a more solid comprehension than the typical lesson plans of reading from a text book and being tested on what was read. By experiencing real world application of these subjects they become much less abstract and distant for the individual, and instead become something that they can really experience and actually enjoy.
Art was recently suggested to be included in S.T.E.M., turning it into S.T.E.A.M as the argument was made that innovation in our world is driven by critical thinking and creativity which are key skills developed with art. Through the addition of art within the mindset of S.T.E.M. we are able to not only further our understanding of the subject content in a traditional sense, but are also able to begin to think critically and creatively about issues and topics within the fields which drive innovation in our world today.