After releasing it to Fast Ring earlier, Microsoft has now pushed Windows 10 Mobile Redstone Build 14367 to Insiders in the Slow Ring. You can read the official changelog and known issues by clicking here and here.
We also explored and could find some unreported changes that you can read here. Also read our detailed Impressions of the build including performance, multitasking, gaming, navigation demo, bugs & Installation experience by clicking here.
If you are facing issues with this build while installing / upgrading you can read our guide to fix commonly known Windows 10 Mobile upgrade, installation and usability issues. In case you are new to Insiders Program and want to join you can read how to become Insider along with pros and cons