Wordpress begins the year by releasing its latest stable release of wordpress version 2.9.1 . This is an upgrade of the 2.9 version that was released in the third week of december 2009.
Wordpress 2.9 saw a lot of changes in the way spam comments were being handled and the 2.9.1 version seems like a minor upgraded. I have not seen any major changes in the Wordpress admin dashboard with the new version. Its very important that you keep your wordpress updated to avoid any security vulnerabilities to your blog, it does not matter even if its a minor upgrade.
If you are new to blogging and wordpress installation, I recommend you to download the Wordpress handy guide installation process. If your blog is hosted on Blue Host its a very simple “One Click Installation” process to install wordpress.