Try the New Xbox Cloud Gaming Web Experience — Now in Public Preview

Hi,

To add on what SunkNath posted. The issues with the Xbox OneStore where Games, DLC, and other content that was purchased on a Preview console was only for that short time period as there was a new store system being implemented that only the Preview build
had at that time, till general public release. Now that everyone on Xbox has the new OneStore experience (released in the summer update), this issue is no longer the case and you can leave or change preview branches in the future without worrying about loosing
purchased content or being unable to play them due to not being on a preview build.

Thanks!

The preview FAQ explains this best:

Q: Can I opt-out of the New Xbox One Experience Preview?

A: Yes. During the Preview period, there are two ways you can opt-out of receiving New Xbox One Experience Preview updates.

Prior to receiving the New Xbox One Experience Update Preview, take no action – we’ll default you to remaining on the Existing Xbox One Experience preview. You’ll still get the benefits of Preview, like Backward Compatibility, but you’ll stay on the current
Xbox One update that’s available to the public. Later, just before the general release of the New Xbox One Experience, we’ll update your console to the latest Preview build, so you’ll still get it a little early.

In the Registration area of the Xbox Preview Dashboard, you can choose Remove to remove your console from the program entirely. Your console’s removal will be processed within 72 hours.

If you'd like to remain a part of the Preview program and return to the original Xbox One experience, open the Registration area of the Xbox Preview Dashboard, select 'Change' and then select 'Preview - Original Xbox One Experience'. Like the Remove option
above, your console will take a factory reset as part of this change.

NOTE: If you choose this option after taking the New Xbox One Experience Preview update, your console will go back to the current general release of the Xbox One software, but this will restore factory defaults on your console, and erase all locally stored
accounts, apps, games, saved games, settings, and home Xbox associations. We encourage all users to download/copy your favorite games to External Hard disks to ensure a quick recovery option in the event of data loss from a removal.

Hi there,

by opting-in to the new experience, you will still be a part of the preview program as it is still a 'preview'. There are now two groups in the program - "existing" (as in the current experience) and "new" (which is the new preview that is slowly rolling
out to those who have opted in).

Q: I’ve opted in to the New Xbox One Experience Preview, when will I get the new update?

A: This update will roll out in waves, starting with a small number of users who have strong participation in the program, and expanding to larger numbers of users over time. Until then, your console registration will show as EnrollPending. This is normal,
and will change once you’ve been selected for the New Xbox One Experience Preview update.

Q: Who do you decide to give the Preview updates to first?

A: We are taking many things into consideration, but we are starting with a small number of users who have strong participation in the program, and expanding to larger numbers of users over time.

Q: Can I opt-out of the New Xbox One Experience Preview?

A: Yes. During the Preview period, there are two ways you can opt-out of receiving New Xbox One Experience Preview updates.

1. Prior to receiving the New Xbox One Experience Update Preview, take no action – we’ll default you to remaining on the Existing Xbox One Experience preview. You’ll still get the benefits of Preview, like Backward Compatibility, but you’ll stay on the current
   Xbox One update that’s available to the public. Later, just before the general release of the New Xbox One Experience, we’ll update your console to the latest Preview build, so you’ll still get it a little early.
   
2. In the Registration area of the Xbox Preview Dashboard, you can choose Remove to remove your console from the program entirely. Your console’s removal will be processed within 72 hours.
   
   NOTE: If you choose this option after taking the New Xbox One Experience Preview update, your console will go back to the current general release of the Xbox One software, but this will restore factory defaults on your console, and erase all
   locally stored accounts, apps, games, saved games, settings, and home Xbox associations. We encourage all users to download/copy your favorite games to External Hard disks to ensure a quick recovery option in the event of data loss from a removal.
   

For the full FAQ, please visit this link: http://forums.xbox.com/xbox_early_access/update_preview/update_preview_forums/nxoe_1509/f/5541/t/2038522.aspx

@Whopperstomper2 hey hey

It's not a bug, but a normal behavior, that noted in FAQ for NXOE program.

"Q: Can I opt-out of the New Xbox One Experience Preview?

A: Yes. During the Preview period, there are two ways you can opt-out of receiving New Xbox One Experience Preview updates.

Prior to receiving the New Xbox One Experience Update Preview, take no action – we’ll default you to remaining on the Existing Xbox One Experience preview. You’ll still get the benefits of Preview, like Backward Compatibility, but you’ll stay on the current
Xbox One update that’s available to the public. Later, just before the general release of the New Xbox One Experience, we’ll update your console to the latest Preview build, so you’ll still get it a little early.

In the Registration area of the Xbox Preview Dashboard, you can choose Remove to remove your console from the program entirely. Your console’s removal will be processed within 72 hours.

NOTE: If you choose this option after taking the New Xbox One Experience Preview update, your console will go back to the current general release of the Xbox One software, but this will restore factory defaults on your console, and erase all locally stored
accounts, apps, games, saved games, settings, and home Xbox associations. We encourage all users to download/copy your favorite games to External Hard disks to ensure a quick recovery option in the event of data loss from a removal."

If you decide that you don't want to get Preview updates anymore you can opt out in the Xbox Preview Dashboard app. You won't be removed from the program right away; it won't happen until the current update is released to the general public. If you change
your mind, you can always re-register your console later using the Xbox Preview Dashboard app. There are two ways to go about this:

1)Prior to receiving the New Xbox One Experience Update Preview, take no action -- we'll default you to remaining on the Existing Xbox One Experience preview. You'll still get the benefits of Preview, like Backward Compatibility, but you'll stay on the current
Xbox One update that's available to the public. Later, just before the general release of the New Xbox One Experience, we'll update your console to the latest Preview build, so you'll still get it a little early.

2)In the Registration area of the Xbox Preview Dashboard, you can choose Remove to remove your console from the program entirely. Your console's removal will be processed within 72 hours. If you choose this option after taking the New Xbox One Experience
Preview update, your console will go back to the current general release of the Xbox One software, but this will restore factory defaults on your console, and erase all locally stored accounts, apps, games, saved games, settings, and home Xbox associations.
We encourage all users to download/copy your favorite games to External Hard disks to ensure a quick recovery option in the event of data loss from a removal.