You can´t expect to upgrade to v1 and have the CLI tell you what to change.
Copied from Discord:
If you a want a “preview” for Upgrade notes (remember, these are the notes), you can look here: https://gist.github.com/hawkeye64/da4b4d662ab1484bd0b532ffd871679e
This will tell you what has changed, but you will still have to manually check and edit the code yourself. I believe the best way at this moment is to start a new project and copy/rewrite your project from scratch (as there still might be bugs in the beta so you will have to check if you made a mistake or if it is a bug that has to be fixed).