I keep seeing this question pop up in IRC so I thought I’d post something about it…
“How do I upgrade from Ubuntu Beta to Ubuntu RC (and eventually to Final)?”
If you’ve installed Beta and want to upgrade to RC (and eventually Final) simply continue to update your machine. There isn’t anything special that needs to be done, just run Update Manager and apply any available updates. Updating your machine in this way will take you from Beta to RC to Final.
I hope that helps for anyone still wondering. Also, for those of you that are still on Ubuntu 7.10 “Gutsy” that are going to be updating I’ll have instructions on that over the next two days.