Just checking did I hear that right?

Why so many?

Yes 4.....New HMs is my guess

Stick a fork in Harriet, she's done.

Maybe they will be put into another house with a few more HM's and there will be 2 different houses. then after 2 weeks they come together?

Last throw of the dice I would imagine

Has to be 4 ex housemates going in to hook people in

4 unknowns will do absolutely nothing and just be cannon fodder