On the Linden Lab official website there is a new section on the right hand side called sign up for beta products where you might be chosen to participate in beta Linden Lab products. All you have to do if you are interested is to fill out the sign up form which takes a few seconds to do then press Submit when finished. Just keep checking your email regularly for updates from Linden Lab.
Confirmation thank you message will appear once you have pressed the Submit button.
Will you be signing up for future Linden Lab products ?