Hopefully it can live up to the concept art, it might take time to grow in but when it is at its best it will be a sight to behold. I do wonder whether they will welcome a 4th adult female for breeding as the enclosure does not only look amazing and will hopefully be great for the gorillas but it is also (4 times?) bigger than the one at Bristol Zoo Gardens.
I thought the same about similarities to Gorilla Kingdom at ZSL when the images were first released last year, chances are inspiration may have been taken and I wouldn't be surprised if so. It didn't win the poll for the best gorilla enclosure in the UK for no reason!
I have done a bit of looking and found these two links overlooking the developments ongoing at BZP, with some older images I have seen previously and also some newer ones:
Bristol Zoo Project: Masterplan and Central… | Grant Associates
Projects I Bristol Zoo Project
It seems to me like there are two stages of development being shown:
Stage one consists of Phase 1 of the Central African Forest (Gorillas, mangabeys, crocodiles, parrots) and the addition of ostriches into Benoue National Park (labelled 10 on the map in the video I linked yesterday).
Stage two consists of the second phase of the Central African Forest (Mandrill and Okapi confirmed previously) as well as the addition of Black Rhino (with their own area) onto Benoue National Park. It looks like plans aren't in stone for any of this yet with Red Panda taking up some of the area previously earmarked for Okapi and and possibly Red River Hogs still inhabiting the area that the Black Rhino extension was going to take up. From this I think it is still a bit of a way off.
I'm not 100% sure on this but this is what these articles, maps and previous updates seem to show.