Absolutely. There will definitely be unheard P verses on the album, but they also aren't using anything that's been released officially. SOme songs like Night Life were leaked and released.
I appreciate that they aren't keeping things off the table just because they might be on youtube with only 3,000 views in 15 years. I feel like they're actually crafting the best album possible and not refusing to use a perfect fitting verse here or there, just because the biggest Mobb Stans on YouTube might've heard it already a few times.
Edit: For what it's worth you never would've known if no one sent you this Night Life song. Now you just have 2 brand new P joints you never heard to rock with. That's a win/win scenario