Still getting used to the boatload of new features and functionality available in WordPress 2.5,
but at least the site navigation / layout didn’t seem to be clobbered during the upgrade process..

Found this helpful link about 2.5.

While going through the 2.5 beta information a week or so ago, I tripped upon the Stats feature which provides you with a ton of usefull data about who is visiting your site, your top entries, etc.