No, it's not new/posthumous David Foster Wallace. That would be awesome, but this is just a reprint - with a new introduction and conclusion by Michael MacCambridge - of DFW's 2006 article about Federer/Nadal at Wimbledon.
As with most of DFW's stuff, this piece is endlessly quotable, rhetorically memorable, and intensely contemplative.
Almost anyone who loves tennis and follows the men's tour on television has, over the last few years, had what might be termed Federer Moments. These are times, as you watch the young Swiss play, when the jaw drops and eyes protrude and sounds are made that bring spouses in from other rooms to see if you're O.K.
If you like tennis, or you love good writing, you should read this article. Really. Do it.