The update went smoothly on Xperia 10 II. However, I noticed that I am unable to open Situations app since the update. The icon keeps spinning forever.
I am not sure if it is a new issue introduced by 4.5 as I haven’t used Do not disturb mode before, but it seems to be only partially obeyed by some apps. It seems that I do not get sound notifications when receiving a message on Element (Matrix client) running on android. However, the same app ignores Do not disturb when receiving a voice call from the same contact and the phone rings.