Anyone have more insight on this then the brief articles out there right now?
Updated my Lumia 620 to Windows 10, Build 10586, using this tool! And running quite smooth without any hiccups, unlike when I tried the preview builds 2 years back. Pity the official update route took this long to arrive. Sent a tip about this to WC. No response… My Lumia 640 XL is on FCU, so the OTC tool showed up to date when plugged in. the x20 and x25 Lumia series can only update till 10586.71/Build 1511 apparently.