It's probably possible, but may make 2.0.4 unstable.. although I don't remember any real difference in the database structures.. so it should be possible without much challenge.
In the end I want 2.0.4 to go away. It seems like an easier way to upgrade, I won't have to transfer data. I would like to limit the hassles of the upgrade and since I don't have many hacks it should be easy.