I was there on Sunday and after the tiger talk had finished and everyone had moved on I tried asking quietly the ranger/keeper "any new arrivals?" but she did an amazing job of giving nothing away
The signs were there. Only Makari was out, there were notices up at every window asking people to be quiet, last time I was there at feeding it looked like she had extra food and the time before that I was there they were constantly mating. I looked at that date on my camera and it would have been around 1-2 weeks ago if the matings were successful which clearly they were. Happy for the keepers especially after the tragedy when trying to put the previous pair together