Wow that's a lot of questions

And I am happy to provide you with some answers!
About Ghandi
Yes, Ghandi is doing just fine. He has found a playmate in the 11 year old female Kungrao and is being a hyperactive pest for the adult elephants, just like a young male elephant his age should.
About the savannah
1. Yes, the fences was removed this summer. All the antelopes are using the hippo enclosure as well now, and the wildebeests found a new hobby right away. They started to tease the giant hippos until one of the almost got killed by Polo (the huge hippo male). Now they are more carefull.
2. The original plan was to have the rhinos use the whole area but I'm not 100% sure what went wrong here. It doesn't look like they will get the whole area any time soon though. I still don't understand why the zoo hasn't switched to black rhinos...
About the polar bears
The polar bear enclosure is next on the list of great projects. For those of you who don't know, the polar bears live in an old bear grotto. Fortunately it is one of the best of the old bear grottos in Europe, but still not good enough for polar bears in our time.
The new exhibit is being planned currently. I have been inside the "studios" at Copenhagen Zoo and seen the model of this new enclosure. I didn't have my camera and the model was wrapped in plastic, but I took a picture with my cell that you all (hopefully) can enjoy, even if the quality isn't that good.
As you can see on the first picture they won't be using the bird lake, only take a small part of that area. The enclosure will include a land-part and a deep water-part. There will be a glass tunnel where visitors can view the polar bears under water. The seals will also get an extension to their enclosure so the visitors can view them next to the polar bears. The new enclosure will be 5-7 times bigger than what they currently have.
Please remember that these plans are preliminary, and nothing is certain yet (except the location).
Feel free to ask more questions.