We've already covered what's been included in GDR2 from Microsoft as well as the Amber firmware update from Nokia, but there appears to be more pieces to the jigsaw puzzle. An update for Extras + Info has been fired out into the wild that enables Lumia Windows Phone owners who are rocking GDR2 to start blocking numbers and unwanted contact. Yep, this is huge, folks.

The new settings area added, after you've got the latest version of Extras + Info is "Call + SMS Filter," which essentially does exactly what the name suggests. It's a feature we've been praying for since Nokia jumped onto the Windows Phone wagon. With this new blocking functionality, you'll be able to add numbers to your blacklist for incoming calls and SMS to be quarantined.

Microsoft created new APIs with Windows Phone 8 build 10327, which makes it possible for Nokia (and other OEMs) to implement this. We've received reports that this may well be carrier locked, but if you're certain you've updated enough and should be able to use the feature, head into Extras + Info and then back out again to the main settings list to see if the item has been added to the menu (the entry also details whether or not this feature is enabled).

Heading into the call + SMS filter settings area will present you with a few options - fear not, there's nothing major here. All you need to worry about is enabling (or turning off) the filters and managing blocked numbers. The counters below will show how many have been caught. If you head into "Advanced" you can fine tune the filters with settings to block withheld numbers, turn on the Live Tile (see below) and receive toast notifications.