will it be valid?
for 1.0?

#############
class A
{
}

class B : A
{
}

int main(char[][] args)
{

	B b;

	A a = b;

	B[] bs;

	a = bs[123];	// valid

	foreach(A a ; bs)	// invalid
	{
	}

	return 0;
}

############
dmd ../C.d -I~/dmd/src/phobos
../C.d(20): foreach: B [] is not an array of A
############

if A is an interface the compiler produces the same message.

Ant