* Support for arrays: data structure, functions
* Arrow operator (<code>=></code>): applies a function to an item, using the item as the first argument to the function:. The expression <code>$i=>$f()</code> is equivalent to <code>$f($i)</code>, and <code>$i=>$f($j)</code> is equivalent to <code>$f($i, $j)</code>.* Map lookup operator (<code>?</code>): returns the value of a map for a specific key. The expression <code>$map('name')()</code> is equivalent to <code>$map ? name</code>.
* Support for JSON: <code>fn:json-doc</code>, <code>fn:parse-json</code>
* <code>fn:collation-key</code>, <code>fn:load-module</code>, <code>fn:parse-ietf-date</code>, <code>fn:transform</code>, <code>map:for-each-entry</code>