https://www.bbc.co.uk/news/world-48700496
Merlin have, after many years of planning, moved two whales from an aquarium in China to a whale sanctuary in Iceland.
Animal welfare is still a developing issue in China, and aquariums/oceanariums with whale shows aren't unusual. Merlin bought the Changfeng Ocean World Zoo in 2012 and rebranded it into a Sealife Shanghai, and committed very early to improving animal welfare and ultimately moving the whales, despite the massive popularity of the show. Indeed, Merlin don't actually list Sealife Shanghai anywhere on the Sealife website, and you have to do some digging to find out that they own/run it.
The movement to the sanctuary had hit a couple of delays and was an expensive, logistical nightmare, but is now finally done.
I don't know the long term plan for Sea Life Shanghai, but I imagine they're going to continue bringing it in line with other Sea Lifes, and further push education of animal welfare in China.