I don't trust this prediction
1. Gaga is doing iTunes Festival and this will probably push pre-orders since she's performing 5/6 new songs.
2. Gaga has yet to reveal some collaborations, she has mentioned that there will be multilpe hip hop collaborations, and there is likely going to be a big female pop star on the album such as Britney, Madonna or Beyoncé.
3. Gaga's fans buy multiple copies of the album. 2 months ago when a thread was made it seemed like the average amount of albums bought per fan was a little bit less than 3 thanks to the App, digital version, vinyl, deluxe edition and physical copy.
4. The App will definitly push the album's sales. It's an innovative idea for such a huge star and it looks like it's going to make the album sell a whole lot more - the App will easily get it to the front-page in the App store which I think gets over 25 million visits a day.
5. Gaga is not playing around. Gaga is known to do lots of promotion (worldwide).
6. Gaga is likely to release a promotional single or second single a week or 3 (
) before the album release.
And next to that, I can see Gaga playing smart tricks such as making it so that if you buy a ticket for her concert you automatically pay for a copy of the album too.