After receiving notification of the latest WordPress release I wandered over to the WordPress Blog to see what was included in the latest version (2.5.1).
Aside from what has been described as a “very important security fix” there were over 70 additional bug fixes, most of which I hadn’t come across myself although had heard of some troubles encountered by others.
Unlike my previous upgrade this time I just switched the subversion repository and ran the web based update script, shaving off an additional few minutes and therefore upgrading my install in under two minutes from start to finish!
svn switch http://svn.automattic.com/wordpress/tags/2.5.1/
Luckily everything seems to be working fine and I have faith in the WordPress releases, but if you want to be more cautious you should probably backup your database first.
As Paul’s response to my previous upgrade post mentions, any web scripts can be rolled back using svn.
It is highly recommended that you carry out the upgrade as it is said that the vulnerability to 2.5 will be made public shortly.
There is also to introduction of additional security in the form of secret keys, introducing randomness into the cryptographic functions used for cookies.
Simply obtain a secret key and paste the code into your wp-config.php file along with the other defined variables.