A new Windows 10 for PCs build has leaked onto the Internet today, this time it's build 14278. The build number is one build lower than the current Fast ring build.
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It's been a month since Microsoft launched Windows 10, and 75 million PCs are already running the new OS - is yours one of them? Vote in our poll to let us know if you've upgraded, or still waiting.
Why does it take so long for new Windows 10 Mobile preview builds to be released? Simple: Windows 10 Mobile can't be patched in the same way that PC builds can, as Microsoft's Gabe Aul noted today.
