Beta sign ups for Ultima Online: Stygian Abyss have started at the official site. Check below to find out where and how to sign up!
There are a limited number of Closed Beta spots available and not everyone that applies will be admitted. Closed Beta testers must be current Ultima Online subscribers, and will be selected based on a variety of factors, including computer system specs, game experience, and community involvement. The Closed Beta is limited to players 18 years of age or older, and requires the acceptance of the Beta Test Agreement located at the bottom of this form. Please note that checking "contact me about EA products, news, and events" will not increase your chances for beta entry.
The link above will take you directly to the sign up page.