The latest issue of The Gospel Coalition's online theological journal, Themelios is out now. From Don Carson's editorial on Spiritual Disciplines,
People think of themselves as "spiritual" because they have certain aesthetic sensibilities, or because they feel some kind of mystical connection with nature, or because they espouse some highly privatized version of one of any number of religions (but "religion" tends to be a word with negative connotations while "spirituality" has positive overtones). Under the terms of the new covenant, however, the only "spiritual" person is the person who has the Holy Spirit, poured out on individuals in regeneration.
Lots of other good stuff too, but sadly Carl Trueman's regular 'Minority Report' column is no more.