Just a quick note.
If you’ve upgraded your Windows Phone 8 handset to Update 3 ahead of its release then you might want to check for a couple new updates released this week. Not much is known about these updates other than providing general performance and stability improvements (which aren’t bad things).
After installing the update the Windows Phone software version will bump up to 8.0.10521.155 for those that are interested.
All you need to do is follow the normal Windows Phone update procedure to get these updates.