ECMASCRIPT SIX

default parameters
rest parameters
[1..10] SPREADS
sets
let
typedarrays
modules
Object.forEach
ARROW SYNTAX FOR FUNCTION OH BABY let k =  x -> x * 1000
GENERATORS+ITERATORS=IM CUMMING IM CUMMING
LIST COMPS

FATHER
THE SLEEPER HAS AWAKENED

>>5
no half the features are already implemented in IE10, v8 and ff.
should be ready for use in less than one year according to brendan eich.