Where is the new UI interface?

Yesterday I was excited for 1.21 to come out with the new UI interface and the hardcore mode, when the Tricky Trails update came out on my cell phone, I updated it and after running the game only the old interface came out I decided to create a new world and there is no hardcore mode with the new UI interface for creating a new world, nor has this new interface for adding a friend and entering the join code been updated. The realms server only has the new UI interface for adding a friend or the servers. of mini games is updated, the new UI interface only has all that in the new UI interface with the latest Preview/Beta version of 1.21.10.23.

I hope they fix it, thank you very much, I liked your game, happy 15th anniversary and Happy launch of Tricky Trials Update 1.21