I have no idea how Microsoft would know precisely every device using bitlocker. That would require pretty intrusive knowledge about your device. Maybe they do, but the privacy outcry might not be welcomed. Maybe they decided to wait until the official update to fix it. I'm sorry for your "loss":smile:
They know enough to have ruined the photos hub based on some bogus telemetries.
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Honestly, at this point I think it's just incompetence. Sure, we are Beta testers. But there's a difference between accepting hick-ups, bugs etc and between being prevented from updating a devices based on a problem with something a ton of us don't even have turned on in our phones.
I am not flashing my phone back to WP8 to update. Deutsche Telekom has released Cyan for both the 1020 and 920 and none of my phones was updated because of Microsoft and I'm certainly not losing everything on it (no, data from apps is not saved unless the developer updated the app to allow it to back up...and the majority of developers hasn't updated their apps) just to get Cyan.
Also, unless you have a 1520 or a 929, Cyan doesn't bring you anything worth the trouble you have to go through to get it. That Microsoft hasn't solved the issue and released GDR1 already...that's what annoys me and concerns me.