Did the upgrade last night. Like several of you folks I had long download times, especially at the 5% mark and like several others had the long restore my settings etc. at 9 of 23 and 15 of 23.
I just left it alone to finish up overnight. I checked it 3hours later and the phone was sitting at a new home screen. Sucess.
No problems for me, all email accounts were correct and every setting on my phone was correct.
One thing that did take some time after upgrade was the app updates which for me was just about everything on my phone. Again, patience, and an hour later all apps were current and working.
As to batt usage, I noticed that on my phone at least, one note, word , the music app all were resync mode as well as many other OneDrive apps, photos docs etc. This took most of the afternoon, off and on. About 2 hours more. Yes, phone was running a bit warm , about the same as when im using video skype for more than 45 mins, but after everything was sync'd, back to cool or normal ops.
This evening my 510u is working just as it was before the upgrade power wise. One of the things i like about this phone, the batt life for me at least.
The only , only, thing that did not come back EXACTLY as I had it set was my liked email accounts. Just had to hit the link key and they were all relinked.
So, all in all it was smooth here. I'll keep updating if I find any glaring issues. So far very very happy with the changes and especially with the volume apparently being fixed. Yay ! I can now hear Cortana in the other room now.
All my best!
Update: 3-22-2016
So far no glaring issues. The night after the 1st upgrade, my phone received a second " update " and a few minor changes resulted. Edge now screams and the frequency of OneDrive syncing has gone down by 75%. Phone operation in general is so much smoother and one big plus is that the Photosynth App now works perfectly ! I have noticed that many apps that did not work at all or had VERY limited functionality now work as intended. All in all, a great improvement. The call blocking function is perfect as well.
Again, all my best.!
Stew
Facebook
Twitter
Instagram