Genetics, updated built-in functions (types, order of arguments, naming), better attribute reading support (should be easier), threads or support long running processes, one line methods (kotlin like), updated env-var handling especially $_SERVER/POST/GET...
Still after reading it and the page:
What, hä, ah composer just more complicated, no more features and with a strange documentation
Genetics, updated built-in functions (types, order of arguments, naming), better attribute reading support (should be easier), threads or support long running processes, one line methods (kotlin like), updated env-var handling especially $_SERVER/POST/GET...