Do not compare Telephone sequel to her other 1674 promises because it was meant to be a trilogy, with even "To be continued.." in the end.
That's why I'm pretty sure it will happen in a period of 4 years or so. And why Beyonce when Gaga can do it alone or with other artists? I can see the Mexican vibe featuring
Azealia Banks, Gwen Stefani, Selena 
, whoever not. Lady Gaga could also portray her "downfall" ala the never released DWUW video or Paparazzi (which actually "happened").
She just needs to BURY ARTPOP.
