Recently, we learned about the upcoming update to Windows Phone 8, called General Distribution Release 2 (GDR2). This update has already been rolling out to select handsets running Windows Phone 8, and now new details of this update have emerged today.
According to a new report, the GDR2 update for Windows Phone 8 features brand new APIs for call and SMS blocking/filtering. The API allows for the ability to block specific numbers that are not in your address book. The API also allows you to block phone calls that contain a private or anonymous number. The same goes for SMS messages, allowing users to block harassing texts.
According to the report, this capability is either activated or deactivated depending on what the carrier wants to do. There is no interface for these APIs so you wont be able to access this feature. However, the chances of a third party app to utilize these APIs is highly likely.
While GDR2 update rolls out, Microsoft is working on GDR3 which is expected to bring support for 5 or 6 inch Windows phone devices, as well as quad-core chipsets. This update will debut first on new devices, then eventually be released for existing devices. Microsoft is also working on Windows Phone Blue, which is rumored for release in early 2014.Further reading: Microsoft, Windows Phone