A new software update is rolling out to Lumia 630 it seems. The update takes the Lumia 630 OS version to 8.10.12397.895, the same OS version that Windows Phone 8.1 dev preview version got updated post latest 3rd update.
It enables continuous autofocus to Lumia 630 Nokia camera app, a feature which is coming with Lumia Cyan for Lumia 1520 and Lumia Icon too. There are minor changes like Skype getting added prominently to the dialler, something which we already can see on devices running latest version of developer preview.
Thanks Sanjo for the info. Cheers!!