$Windows.~BT Folder - anyone else seeing it?

[muitosabao]

Apparently, people are already downloading the final Windows 10
Windows 10 might already be downloading on your Windows 7 and 8 PCs | The Verge

I have it too on my surface Pro 3, but it's just weird since I'm on the latest preview. Will the previewers have to install again?
Aren't we on the latest? I even have installed this morning's hotfix KB3074683

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[Pete]

Already discussed here

http://forums.windowscentral.com/wi...10-started-downloading-reserved-new-post.html