The latest release of WordPress 2.3 is now ready for use. This release is called Dexter Gordon and same as previous WordPress series its named for the great music artist i.e. a tenor saxophonist.
Many new features included in this version and some of them will increase the SEO performance of your blog significantly. Those feature are :
Native tagging support which allows you to use tags in addition to categories on your post. It also has importer for Ultimate Tag Warrior (Very popular WordPress Plugin) for backward compatibility.
Another important feature is canonical URLs which does things like enforce your no-www preference, redirect posts with changed slugs so a link never goes bad. Matt said that this feature will help SEO of your site as well.