Soooooo.... Basically there won't be a W10 that's the same through all phones.
It was stated that all 8.1 devices will receive the free update to W10.... Yet this feature of W10 is only for new devices that will come after W10 is released.
It was understood that lower end devices wouldn't get all the bells and whistles while the higher end / mid range phones would get the full experience of W10.... Yet now it looks like we're going to have another Windows Phone 7.8 & 8 experience.
All existing WP users will get the Windows 10 (7.8) experience while anybody who gets a new phone after Windows 10 is released will get the Windows 10 (8/8.1) experience.
This also means that the 640 & 640XL also missed the boat for Continuum.
If indeed true, then that's certainly unfortunate. I was hoping my 930 would hold up to the full W10 experience.
Hell even if my screen shuts down and only can use the TV / Monitor to display what I need to do, would be good enough for me. If there is a phone call, automatically switch back to the phone's screen.... Otherwise everything else can be done on the TV/Monitor.