1.21 update is planned to release in 2024. See also:
By "Any changes to the Nether Dimension" I mean literally any changes, including changes to nether mob AI and loot tables
"Wind charge becomes a new standard for arrow and player cannons" - Resolves YES if Minecraft redstone community starts using wind charge based cannons more frequently than tnt ones within 3 month after the update. Must be true for both arrow AND player cannons. NO otherwise
Related questions
@traders a new variant of the Trial Spawner has been added: the Ominous Trial Spawner. I don't know yet if it's just a block variant or it has a unique block ID. So I'll wait until tomorrow to check. If it has it's own ID, the question resolves YES, as it's technically a new block
@CyfralCoot Actually I'm a based 1.7 modpack player. But I keep up with redstone and it was just such a perfect component. Ruined for bedrock parity.