I'm another who has seen a marked improvement.
10536 was shocking, verrry slow, ate battery life, ate my data allowance (I assume stuck background apps). it crashed when trying to view pictures from the camera app. I had 2 instances of the phone 'going silent', meaning my alarm didn't wake me up
and phone calls wouldn't work - it was really bad.
I rolled back to 8.1 then re-upgraded onto 10549 and it genuinely feels like a different phone.
Much faster, no crashes yet, I've not found anything which doesn't work (yet), I can't really comment on the battery life, but can't believe it'd be any worse than 10536!.
Really impressed with this build :excited:
(am on a 930)