This is a (multiple allowed):

• bug
• enhancement
• feature-discussion (RFC)

bin/cake bake migration_snapshot New

class New extends AbstractMigration
{
    ...
}

When trying to generate it, it throws this at the end

[ParseError] syntax error, unexpected token "new", expecting identifier in /shared/httpd/app/config/Migrations/20240221034352_New.php on line 6

I guess it is mainly about this list? https://www.php.net/manual/en/reserved.php

If someone can help to gather the list of all possible words, I can whip up a PR addressing the issue.

My approach would be to ask() the user about a possible prefix in this case to avoid the collision (prefix defaulting to "Migration"), or allow aborting.
If continue, it would then use e.g. "MigrationNew" and that would be fine.