Its on the AEG live website so obviosuly confirmed

Crafty marketing as ever. They knew the real fans would buy Fridays just in case there was no other date. Once Friday had almost sold out announcing Staurday makes everyone think, oh, I really want to go to the last one of the tour so will have to get them as well.

So they get you to buy two instead of one. Crafty but hey its business and Bon Jovi have never been much different, touring is simply business, despite the Millions they have made from us fans.