Teams and solo enthusiasts alike can now integrate the notification system into their ROMs
A few weeks ago the folks over at Paranoid Android took the idea of Facebook's new Chat Heads software and took it a step further to create what it calls "Halo", a new way to manage multitasking on Android. While the software is still in beta officially, the team took to its official Google+ page today to announce that it is completely open-sourcing the software for other ROM makers to implement on their own. The source code, which is admittedly not cleaned up and still doesn't support proper Tablet UI's, comes by way of two links to GitHub with everything ROM makers of any size need to get started with it.
With the information and links to the source code, it also took a moment to throw out some thanks to Facebook, a few notes on compatibility and scaling of apps from Google Play, and some notes on the new version of Halo currently being used on Paranoid Android's ROM. The Google+ post also links to a great walkthrough of the feature as it stands now, which you can find above.
Source: +Paranoid Android