[CentOS] CentOS 5 beta upgrade path

Wed Mar 28 12:52:57 UTC 2007
eric at austinconventioncenter.com <eric at austinconventioncenter.com>

How hard would it be to upgrade from CentOs 5 beta to the released version?
Would it be as simple as a yum upgrade or would I have to upgrade via
booting from cd/dvd/pxe ?

Pardon my ignorance if this has been asked already