What info did you use to find out that V8 has a conforming `let` implementation? I have chrome canary 34.0.1775.0 canary and the "experimental JS" flag turned on, but `let` in the for-loop doesn't bind per iteration:

http://gyazo.com/d665a8795bb66d50e900e23538fa205f

Here's my test code. This should print 0,1,2,3,4,5, one on each second. :)

```js
function foo() {
   "use strict";
   for (let i=0; i<6; i++) {
      setTimeout(function(){
         console.log(i);
      },i*1000);
   }
}

foo();
```