One - click authentication and in - app billing are the two biggest feature drops in dev preview number 4. (slashgear.com)
The first Android N dev preview dropped last week, and since then, we've been digging in to the new operating system to find out what's new. (9to5google.com)
A lot of early adopters have noted several performance improvements and bug fixes in the final dev preview. (androidauthority.com)