Nicki tweeted the following:

No, it'll be a "hint", not new music.

It's the Bang Bang snippet we literally got an hour ago.

She was continuing on the line where she said 'Thank you for coming', and ended it in a comical way by saying 'Good night'.

No it's not. It's something else she's been teasing for weeks.

And we're not getting new music tomorrow. It's gonna be an announcement, hint or snippets.

Better be worth it cause if it isn't...

Same here. She just releases random track after random track but there seems to be absolutely no progress regarding an actual album.

If you read her timeline you'll see the hint and the "surprise" are 2 different things sis

Album release date.

What else then. In her early tweets she responded to someone saying that she spoiling the Barbz with music. Then she said it about to get better. Sooooo, it's prob a snippet of her second single, seeing as she's already tweeted a snippet of Bang Bang.

knowing her, its an announcement of an announcement

Hope it's something actually exciting

Probably has to do with Bang Bang...