Sign up for the beta is open.
However, Skye's severs are getting hit HARD right now, so the page keeps timing out.
And I don't know what to tell you to let you know if it worked or not.
Just keep trying.
EDIT: IF/WHEN YOU SUBMIT THE FORM SUCCESSFULLY, YOU'LL GET A 'FORM SUBMITTED' NOTICE AND AN EMAIL. SO, KEEP TRYING.