Does std::array default-initialize or value-initialize?

According to cppreference, std::array's constructor performs default-initialization when an std::array is created. However, when I'm doing some test in Visual Studio 12.0, in some circumstances std::array seems to be performing value-initialization.

std::array<int, 3> arr1;  // gives me some garbage values, as expected
auto arr2 = std::array<int, 3>();  // gives me three 0, value-initialize?

Also, when std::array is a member of a class, sometimes it has indeterminate values while sometimes it has all zero.

class Container {
public:
    Container() ...

    int& operator[](size_t i) { return arr[i]; }    
    size_t size() { return ARR_SIZE; }

private:
    static const size_t ARR_SIZE = 3;
    std::array<int, ARR_SIZE> arr;
};

When the constructor is not explicitly defined or arr is not in the member initializer list, arr contains indeterminate values.

Container() {}  // arr has indeterminate values, same for no constructor case

When arr is in the member initializer list, arr contains all zero.

Container():
    arr()  // arr contains 0, 0, 0
{}

Also, when I write the following code, I get an error.

Container() :
    arr{ 0, 1, 2 }
{}

g:\cppconsole\cppconsole\main.cpp(89): error C2797: 'Container::arr': list initialization inside member initializer list or non-static data member initializer is not implemented

Is the code supposed to be valid according to the new standard of C++? If so, is it just my Visual Studio version does not support it?

To have the same effect, I write the following code. Is there any potential problem in the code? Because I'm not sure if the code is correct.

Container() :
    arr( decltype(arr){ 0, 1, 2 } )
{}

P.S. I'm using Microsoft Visual Studio Community 2013.