That's an article about a private group (called, not surprisingly, the "New Penn Station Alliance) of civic planners suggesting the Garden move. That's a far cry from, "the Rangers and Knicks are definitely moving," and "the City wants MSG off Penn Station."
I linked to the information on the USPS building I thought would be new to people.
http://mobile.nytimes.com/2013/07/25/nyregion/madison-square-garden-is-told-to-move.html?referrer=