The official download links of iOS 7 GM (gold master) ipsw just gone live on the Apple’s dev center. iOS 7 GM build 11A465. If you have a developer account, then you can directly download a complete ipsw firmware from here. Then restore the downloaded firmware through iTunes to install the GM version of iOS 7 onto their iPhone, iPad or iPod touch.
For download for non developers (For iPhone 5 GSM and CDMA, iPhone 4S, iPhone 4, iPad mini, iPad 3, iPad 2, iPod touch 5, iTunes 11.1 Beta 2), how to restore, and additional information, click on below link:
or this link: http://goo.gl/TCVe8k