During the writing of this book, we were lucky enough to have a look at the upcoming Android N. The new version will probably be available at the end of 2016 as a stable release, after a few months of public developer preview.

Android N introduces a few interesting features, like the "Multi-Window" mode shown in the next image:

At Google, they are very focused on user feedback, and they decided to introduce this feature into the official version after a few months of testing by Samsung. Most of us will recognize the Multi-Windows mode from the already-available Android ROM, by Samsung. In Android N, this will be available for everybody, on every Android device, with full support for both orientations, portrait and landscape, and even the possibility to resize the split windows by dragging the "separator line".

According to lots of blog posts, one of the most popular categories for Google Play Store apps is Caller ID filters. With Android N, this feature will be already available...