The beta version of the new alpha beta update for Windows Phone 8 is now available for download.
The beta updates bring the beta model with the Windows Phone 7.1 update to the Windows Store.
The beta version is designed to work with devices running Windows Phone Phone 8, but there is a bug in the beta version that prevents the beta updates from working with devices that have been upgraded to Windows Phone 10.
It seems that this bug has been fixed, but it may be that you are unable to install the beta update on devices running the current Windows Phone versions of Windows Phone.
It is not clear what the current workaround is.
There are two versions of the beta that you can download: one with the beta firmware and the other without.
The newer beta is only available for the beta-enabled Windows Phone devices, while the older beta is for those that are running the Windows 8.1 beta.
If you have Windows Phone 4 or Windows Phone 6, the beta for Windows 10 will also work with those devices.