She has at least 3 stages ready for 3 different places, plus she can do multible dates on each location. So, the "15 dates in 90 days" calculation is obviously ignoring these info.
Umh no because Gaga has i think 5 stages so thats BS ! Why is Gaga gonna wait 1 yr from the BTW BALL just to do 15 dates ! -_____-
She'll probably be busy with Europe and Latin/South America. And when the SA leg ends, she won't have a lot of time till she has to promote the new album. Well it all depends on the SA dates and when the promo begins.
The acoustic version>>>>>>>>> Although I still don't know why she changed the lyrics during that performance.
Sis...it was an in memoriam performance! She was honoring Lee McQueen. The revised lyrics made good on her promise of ARTistic POP music; the TFM version falls short of the material that surrounds it, but the tender, newly-elegiac "Telephone" makes complete sense in between "Dance in the Dark" and "So Happy I Could Die."
She'll probably be busy with Europe and Latin/South America. And when the SA leg ends, she won't have a lot of time till she has to promote the new album. Well it all depends on the SA dates and when the promo begins.
Shes still doing more than 15 dates ! If shes gonna do 15 dates then dont do NA at all ! Shes not gonna do promo like she did for BTW ! The Tour is gonna be promo for the new album ! Shes gonna do TV performances but not as much as BTW era
She'll probably be busy with Europe and Latin/South America. And when the SA leg ends, she won't have a lot of time till she has to promote the new album. Well it all depends on the SA dates and when the promo begins.
If that is the reason, that twitter user would have mentioned this instead of that 5-day contruction thing.
Some highlights from Gaga’s LittleMonsters.com chat a few moments ago:
Gaga hopes to release the U.S tour dates in September.
She will be making a couple of changes to the European leg of the Born This Way Ball.
The U.S leg of the tour will consist of both stadium and arena shows.
Although I still don't know why she changed the lyrics during that performance. 
There will finally be no spammers. 
and have bigger screens !