To bring them up to a higher standard,yes. There have been some cosmetic changes afoot, but unfortuntely I cannot see any major structural rebuilds happening soon, they just don't have the money, unless , as with the Bonobos, there is a private or company donation involved. I think in this case its only for improvements to the outdoors anyway?
IMO the one that needs it most is the whole of the Orangutan House-IMO this is really not suitable any more in this day and age, and also the indoors is very cramped for them. I would like to see that become a priority but alas am not expecting any changes soon.
I think you will find all the 'brand new exhibits' they are talking about will be much smaller-scale ones.