ES6: var a,b,c; [a,b,c]=[1,2,3]; - destructuring assignments - Is that something coming soon?

I know that there is always hunger for every thing to be in Espruino... ;-)

This multi-assignment / array and object destructuring assignment could give some space relieve for quite many things (the example though does not really portray that):

>var a,b,c;
=undefined
>[a,b,c]=[1,2,3]
Uncaught Error: Unable to assign value to non-reference Array
 at line 1 col 15
[a,b,c]=[1,2,3]
              ^
>

Would work for returns from functions as well:

>var a,b,c;
=undefined
>var trippler = function(){ return [1,2,3]; }
=function () { ... }
>[a,b,c] = trippler();
Uncaught Error: Unable to assign value to non-reference Array
 at line 1 col 20
[a,b,c] = trippler();
                   ^
>

I 'expect' only the simple implementation(s)... even though sometimes nothing is better than not all...