Yes

I saw one yesterday. I visited Tropical Trails three times, and on my second visit I saw a head sticking above the water, while the body was hidden under a banana leaf floating on the surface. Mind you, they have always been shy and hard to see, and the keepers have always used these banana leaves to give them a sense of security.
It was nice to be able to go into Tropical Trails again, but I would have liked to see more creatures - the Vietnamese box turtles, Chinese crocodile lizards and Fiji banded iguana were out of sight, as were the pleasing poison dart frogs and Asian giant toads (moved across from the Amphibian Ark). I asked a keeper why the male and female Peruvian bush lizards were in separate exhibits, he replied that they weren't trying to breed them as they had more off-show - which actually begs the question of why they couldn't put more on-show.
Moving on, there was a notice saying that the sloths are still off-show because the night are still cold: does that mean that the heating is not working? And I really dislike the unsightly porcupine enclosure in the Desert House.
There is a reorganisation underway at the dart frog end of the Amphibian Ark and I heard a rumour of a new project starting, which sounds interesting - perhaps there will be an announcement eventually.