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Microsoft today released a new cumulative update for Windows 10 Mobile devices in the Production ring



From Neowin:
Earlier this week, Microsoft released Windows 10 for PCs build 14393.187 as part of Patch Tuesday. An update for Windows 10 Mobile was notably missing at the time, but the same build would show up in the Release Preview and Slow rings yesterday for phones.

Less than 24 hours later, build 14393.189 has appeared for non-Insiders with unlocked devices. It's completely unclear why the build number has increased, and it's entirely likely that we'll never find out. It's a Production ring build, so we won't see a changelog in the Feedback Hub, and Microsoft has never made an addition to the Windows 10 Update History for a Mobile exclusive.
  Windows 10 Mobile build 14393.189 now available for non-Insiders with unlocked devices