The end of the year is traditionally a time to look back and to look ahead. On OPERAphile (Sat 1900, Thu 000), Joanna Go wonders — what lies ahead for opera? The current series strives to peer into the future with its feature of four very recent operas — John Harbison’s The Great Gatsby, written in 1999, Tan Dun’s The Last Emperor of 2006, Jeremy Sams’ The Enchanted Island of 2011, and George Benjamin’s Written on Skin of 2012.