It seems like most fans at this point would like to see some expansion of replay, but Bud Selig hasn't heard them.
Speaking on a conference call for Fox's broadcast of the All-Star Game, Selig said he doesn't believe more replay is needed.
"People in our sport don't want any more," Selig said (via MLB.com). "Given our attendance and everythign we're doing, we're in the right place with instant replay. Baseball is a game of pace. You have to be very sensitive and careful not to disturb that pace."
Apparently Selig's only talked to the people he knows agree with him. Several players and managers have come out in favor of expanded replay this season.
It's a dead horse and we could continue to beat it (and shoot holes into Selig's reasoning), but the bottom line is that as long as Selig is in charge, it's unlikely that any drastic changes in replay will be made.