Confusion about Variadic Templates with Visual Studio 2010

Does Visual C++ 2010 support variadic templates or does it not?

Here is stated:

Visual C++ 2010 does not support variadic templates.

But this forum entry says:

Yes, VS2010 TR1 support variable length template arguments.

And there is also an example on MSDN that is listed as for Visual C++ 2010 explicitly. However, when I try to build it with Visual C++ 2010, I get syntax error C2059 on the "...":

template<class T1, class T2, ..., class TN>
class tuple { /* ... */ };

What am I missing? Do I need to turn on some compiler option?