If you are using Windows 10 Mobile you may want to check for an update under Settings. No, it's not a new Fast Ring update with an OS but there is a new Insider Fast configuration one that is available.
There is no word on what this update involves, but we have seen them in the past. Obviously, they involved with keeping your device in top shape for the next Insider release, so you'll want to download it sooner than later. Having said that, don't expect to see any performance improvements or other changes.
Full story from the WindowsCentral blog...
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