It would be so cool if Forever 21 would open its doors and a lot of shops and I definitely do think that they will do so for the recently opened a lot of shops all around the world and they said that they want to increase their number of shops. I think they seriously try to compete with H&M Above all because it often is cheaper in prices than H&M is.
This is kinda late but it is definitely opening now where Giordano used to be. I think it's taking over the building and you can see the "Forever 21: Coming Soon" banner now. Don't know how soon though.