Hello, I have confusion, i have read on some sites, populor forums that windows 8.1 is going to realese on 18 october 2013. Is this offical date by microsoft? If yes, why everyone here is asking for how to upgrade to windows 8.1? and i see some download links here in the post "Windows 8 Repostiory" Is this safe to download the windows from leaked links? One more thing i have windows 8 professional x64 version. can i first install simple windows 8 pro? can i update it to windows 8.1 rtm?