Now the users can download the new OS from the official site and moreover, it needs to be installed manually. Also this process of downloading and flashing will be a bit tough for the users, who have never installed a custom ROM or flashed a third-party recovery. You can find the installation guide here
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Anyhow, it is not the final version, the company itself has listed a number of known issues with the current version of the OxygenOS build.
As per the company, the OxygenOS comes with the features like gesture support which supports double-tap to wake, draw O to open camera, etc and customization options like opt for software Android navigation key rather than hardware, ability to add to remove toggles from quick settings panel, etc.
"Developing OxygenOS has been an incredibly fun and challenging experience for all of us. In this environment where everyone is fighting to standout with custom ROMs, we think it's important to go back to basics. We place things like performance and battery life over gimmicks and bloated features. We want to be careful that we aren't adding features simply for the sake of differentiation. We've implemented some important features thus far, but they are subtle and meaningful. That's our philosophy behind OxygenOS: keep it light and essential," wrote Carl of OnePlus in a blog post.