It is confirmed & no, it won't be on PPV, Sky might be learning from the weak PPV sales of De La Hoya-Pacquiao, Hatton-Pacquiao & Khan-Kotelnik. Although Haye is PPV so maybe not

Here's confirmation that it's on Sky Sports 1

Floyd Mayweather v Juan Manuel Marquez Live on TV (Boxing: Welterweight, 20th Sep 2009)