As for the free maps for Java Edition and Bedrock Edition, this is what Mojang said on their blog: "Throughout the celebration, we will also be releasing free maps for Minecraft: Bedrock Edition ...

Many Java Edition mods also provide seed maps in minimap or full-scale form, but how can Bedrock Edition players enjoy seed maps as well?

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This without the fact that the Bedrock Edition needs to reach lower-powered hardware than the Java Edition and simply can't do some of the things the Java Edition can do.