Missed posting this earlier in the week. Looking forward to giving this one a spin around the block:
MySQL takes database upgrade for test-drive. “MySQL AB has released MySQL 5.0.3, the first beta version of a major upgrade to its open source database for platforms including Linux, Solaris, AIX, Windows and Mac OS X. ”
InfoWorld: http://www.infoworld.com/article/05/03/30/HNmysqlupgrade_1.html