ah.. sorry :) Changing the object formats alone does not gives any benefits. What is the point in having new format when you keep using old semantic model as before? This is like swapping instance variables order in your class.. Apart from a better aestetical view it gives you nothing :)
let me reformulate. what I asked really is: will there be some way to have existing images run on the coming Cog VM ? (quoting Eliot Miranda: "this VM will be source code compatible and bytecode compatible but likely it will not be image compatible as it will use a streamlined object representation that doesn't use compact classes")
Stef