Samsung has just dropped the source code for the Sprint version of the Galaxy S III, and it's available on Samsung's open source web portal here. Samsung has been surprisingly on-point with getting source code for the Galaxy S III here in the US, ensuring that custom kernels and ROMs will have the maximum amount of tweakability available to tinkerers from the likes of RootzWiki and XDA.
Open GApps can now optionally install Google Assistant
These are all the apps and services that will work with Google Home [Continuously Updated]
[Update: May enable Google Assistant on non-Pixels] Google App v6.13 "alpha" appears with support for Payments on Google Assistant, and prepares enhanced Offline Search, Lite Mode, Recent page, and much more [APK Teardown + Download]