printI also checked references and content areas for M&E Systems 3.1 and Building Systems 4.0
Content areas are absolutely the same. References are the same as well but all noted with later editions. I think for this exam it is important to read more (in addition to 3.0 books) about sustainable design. But one can always find plenty of information about it online. I doubt that new editions of books written specifically for the ARE candidates will have sufficient information about it. Most likely is will be somewhat outdated as well.
Note that some very old books have outdated information about Acoustics and Lighting. They mention units that are no longer in use.