(this was passed along to me by MS Windows Phone Support a short while ago)
If anyone who has installed WP 8.1 Developer Preview to your 1520 and you want to bring up an issue directly within an MS monitored forum. they have one up now:
Msdn forums - Windows Phone Preview OS Issues
If anyone who has installed WP 8.1 Developer Preview to your 1520 and you want to bring up an issue directly within an MS monitored forum. they have one up now:
Msdn forums - Windows Phone Preview OS Issues