Today after releasing Windows 10 Mobile build 10581 to Insiders, Now Windows Insider program leader Gabriel Aul said that they are also releasing new PC build today afternoon and the build could be 10576.
@GabeAul So now for the "thing we've never done before" that I tweeted about yesterday: New PC build will ALSO be out today. This afternoon!
— Gabriel Aul (@GabeAul) October 29, 2015
@Chris123NT PC build will be 10576. More details this afternoon.
— Gabriel Aul (@GabeAul) October 29, 2015
