SOE's kid-friendly "Free Realms" MMO is due to launch later today, with the following message appearing on the game's website:

The Free Realms website is undergoing maintenance in preparation for launch. We'll be launching Tuesday and look forward to seeing you in the game!

ZAM previewed Free Realms only yesterday and it promises to be one of the most diverse MMOs out there at the moment, including the normal combat you'd expect, as well as kart racing, a built-in TCG and even a "Postman" character class.