Matthew Mullenweg is announcing that Akismet with version number 3.1.2 is already available to download.

What is Akismet ?

Akismet is An open source WordPress plugin that checks comments against Automattic's Akismet Web service to see if they look like spam or not . The Akismet plugin was one of WordPress' first ever plugins, developed by WordPress' own creator with the sole intent of detecting spam.The plugin now works via the Akismet Web service, a series of servers that read comments submitted via WordPress blogs and detect if it's spam or user generated.What's marked as spam is then sent to the blog's Comments administration page, where the admin can review them individually and delete them from the site.Installation:Unpack and upload it to the /wp-content/plugins/ directory.Activate the plugin through the 'Plugins' menu in WordPress. This is changelog for Akismet version 3.1.2 :

• Improvements to the "Remove comment author URL" JavaScript.
• Include the pingback pre-check from the 2.6 branch.

You can read the complete changelog and also download this latest version on their homepage: wordpress.org