Not impressed, has the look of a hastily mashed together effort!
The updated map I was given when I visited today was much better.
1. I believe the two females are a mother & daughter(according to the website details). Is there a homebred younger male, born in 2010 still at the zoo, or has he left leaving just the new male & two females now?
2. Can you find out/do you know the new male's origin? Or his name would help identify him..
1) The younger male is still at the zoo, but is planned to be moved elsewhere.
2) Having asked one of the keepers, I can confirm the new male is the ex-Twycross male who left said collection about a fortnight ago.
Edinburgh is now the last zoo in the UK with this species and I hope they can do something to resurrect them.
The aforementioned keeper was surprised to hear Edinburgh is now the only location to keep Hamlyn's in the UK, but said they are quietly hopeful about the prospect of breeding from the new male. So you could be right re: his having been re-tested.
I suspect you are right that the decision doesn't rest(entirely)with Edinburgh and the placement may be the only available one. Also most Zoos do tend to have an 'out of sight, out of mind' attitude regarding animals that needing rehoming. Once shifted, the problem is no longer theirs.
I wonder how the feral Night Herons will cope with no longer having the sea lion enclosure to steal food from

having observed at close range a number of the herons today, I can confirm the feral population at Edinburgh is not only extant but still plural!
Other things I observed and learnt today:
1) As far as I could learn, the fallow deer are still at Edinburgh.
2) The baby hippo is doing well and seems healthy, even wandering away from her mother a little bit!
3) The binturong have indeed moved to a new enclosure - this means there are three vacant enclosures in a row on "Carnivore Row", two of which appear to have undergone some level of re-planting. This may herald new developments.
4) Ipoh the golden cat appears to have recovered well from his operation, and is now bald on one side as a result of having had a shave for the aforesaid.