Google Voice: Coming soon

When I will activate the service my google voice, but there is a notification from google that is :

Google Voice: Coming soon

Google Voice is a service that gives you one number for all your phones, voicemail that is easy as email, and many enhanced calling features like call blocking and screening, voicemail transcripts, call conferencing, international calls, and more.
Google Voice is currently available for GrandCentral users only, but will be open to new users soon. In the meantime, please leave us your email address and we'll notify you as soon as Google Voice becomes available. To learn more about Google Voice, check out our feature videos.
When can I sign up?
We expect to have the service ready for new users in a matter of weeks, and are focused on opening it as soon as possible.
What if I reserved a number on the GrandCentral site before?
We will be emailing you when Google Voice is open to the public to sign up for the service.
How much does it cost?
The service is free.
What do I do if I am already a GrandCentral user?
Over the next few days, instructions will appear in your inbox on how to upgrade your GrandCentral account to Google Voice. Thanks for your patience.
If you're a GrandCentral user who has upgraded to Google Voice but you're being directed to this page, this means you've signed in with a different Google Account than the one you used when upgrading to Google Voice. Please visit https://voice.google.com again and sign in with the Google Account you used when upgrading to Google Voice.