The season kicked off yesterday with a similar twist to BBUK10. The HMs are not really HMs yet. They're just candidates and have to earn their right to become full HMs. How exactly is BB going to play it out, is unclear. The only thing that is clear, is that on Sunday 2 of the HM-candidates will be evicted.
The candidates:

Mari, 18

Maria, 22

Marika, 24

Mia, 19

Satu, 40

Elisabet, 21

Ksenia, 19

Habib, 20

Jani, 23

Paul, 26

Petri, 25

Ville, 19

Hannu, 24
Sorrry for not including more info on the HM-candidates for now. I'll just edit this post a bit later with short introductions.