Seems, it is not only the case of BLU Win JR that Microsoft has been claiming to be upgradable to Windows 10 Mobile since long time, but now a Reddit user from Brazil has posted to reveal how the Lumia 635 has still been shown as upgradable to Windows 10 Mobile on the official page in Brazil. For your information, only 512 MB RAM Lumia 635 is available in Brazil.
Microsoft changed the info from Blue Win JR listing once this story was reported by some blogs but let us see whether Microsoft resorts to similar knee-jerk reactions or faces it openly and communicates directly to users. As we noted in our POV article,
We can still hope that better sense prevails and Microsoft offers Windows 10 Mobile as optional upgrade to at least those devices that were included in Insider Program till the end rather than breaking promises and changing listings.