Hi, so, awhile ago Mojang released a ‘How we make Minecraft’ video (survival edition), and in it were 4 or so teasers about the next update which I think people missed. Since I can't add more than 1 image, I'll only show the possible ice/frozen caves:
They showed some cliff generation, cobwebs in caves and above ground iron boulders (Sry I forgot what they're called) in the video. You guys can check it out and maybe tell people about it since it wasn't that noticed.
Source: https://www.reddit.com/r/Minecraft/comments/lqekpp/caves_cliffs_teaser_possible_icefrozen_caves/