My T-Mobile 635 was upgraded to 8.10.12400.899 over the weekend. I'm doing a Bing search to see what's involved. I was hoping for the "Call Cortana" feature but I tried 555 555 9876 and got nothing.
I find this mildly amusing since I'm having reboot issues with my phone ever since yersterday. It won't shut down. It starts shutting down then gets stuck somewhere, some of my icons go blank. Only way to shut it down is to remove the battery or hold the power button.My TMO 521 received an update a few days ago. Update notice said it was a fix for a 'Reboot' issue some phones may be experiencing.
But anyways, after the update, my OS Ver. Is: 8.10.12400.899 and at this time there are no other updates available for my phone.