Wordpress 2.5 has only been out for a few monthes now, but there is already a new major release which is Wordpress 2.6.
This new version introduce some functions like post revision (modification followup). This will allow you to have more control over modifications done to your posts and checks what have change since the creation of an article. Very handy when you have multiple writers on the same blog.
Google Gears support, will allow you to fasten administration page display via the caching of CSS and JS files.
And finally, theme preview. This will allow you to make sure your design looks good before to apply it. It works the same way as Wordpress.com’s feature.
You will find the complete changelog right here.
One final note, due to the possibility to move your wp-content directory, some plugins may not work until they are updated to take this into account. But zdstats and zdmultilang are fully compatible as I tested them without moving these folders.








