Well guess what? You can now enjoy that on your humble Xbox 360 as well.
Xbox’s Major Nelson tells us that during March invites will begin to be sent out for participation in the Preview Program.
Check your inbox over the next week for two or a message from Xbox which will advise if you have been selected to participate. From there you will need to go to your settings section and look for account management. This is where you will be able to register if you were selected.
The Preview Program hasn’t actually kicked off as of yet, so you will have to wait for further notification of when you can expect your first ‘Preview’.