Nobody knows what goes on behind the gates of Apple HQ . . . Basically, developers submit an app, wait 1 week or so until Apple actually reviews the app. That might be really short or really long depending on the content of the game. Then they either approve it or reject it.
So he posted it in the wrong section. Big deal, he's new to TA. (Welcome to TA both of you, by the way). Technically it is game discussion because it has to do with how games get approved.
Well, for what it's worth, I submitted my app on November 23rd around 9:30 PM; then it went into review on December 1st around 8:50 AM; then was approved for sale on December 3rd at 11:30 PM.