Yes.
Just like The Monster Ball helped Born This Way's sales in some way.
It'll happen for ARTPOP, but considering the BTW Ball is more global, the album will be more global as well.
Hopefully though.
Tours used to be the best promo for albums, but these days tours are just the main money-makers.
Nowadays albums promote tours, not the other way round.
e.g. Madonna dropping albums as an excuse and a buzz for her tours. S&S and MDNA tours are among the most successful tours of all time, but the albums didn't sell anything overall (and the absolute most of it was sold before the tours even began)
Tours used to be the best promo for albums, but these days tours are just the main money-makers.
Nowadays albums promote tours, not the other way round.
e.g. Madonna dropping albums as an excuse and a buzz for her tours. S&S and MDNA tours are among the most successful tours of all time, but the albums didn't sell anything overall (and the absolute most of it was sold before the tours even began)