Not the IDE, granted. But in previous versions of Visual C++ you could download the 64 bit SDK and compile native 64 bit VC++ programs. I hope this track is kept alive. I have a Laptop right now. VC++ may be a bit of a load. I'll wait until I get a new desktop PC.
You can definitely compile 64-bit programs in Visual Studio. Microsoft would be really shooting themselves in the foot at this point to not support compiling to 64-bit. The IDE itself is 32-bit though I am pretty sure.