Sony has released an official EULA for the home beta trial. Topping the list at number 1 :
" In keeping with the aim and spirit of the Trials, you must:
1. keep the contents of the Trials confidential as between you and us and not discuss them with anyone beyond your close friends and family and other Trialists."
Sign up is scheduled to commence later this month. Sony encourages you to keep checking http://www.homebetatrial.com for updates and information.