It would really help if you could input you opinions or facts that you are know about.

i have no clue probably the old world will be permanently deleted

they will have the world file for ppl who wanna download it. its like 500 gb

Alright am just gonna sum up what they said on discord.

1. the beta is already out for duels and today bedwars, march 8th is survival.
2. they will beta test until the end of march.
3. then most likely the reset will happen with world download. i might suggest the idea of getting rid of mobs and player data to decrease world download.

Survival will have a full reset so everything from inventories to player vaults to mobs to builds and everything will be reset. If anyone wants the old survival map, then they can get it and its quite simple: its a 600 Gigabyte Google Drive file.