iOS 7 Lock-Screen Flaw Allows Access to Photos, Email Sharing

Apple is aware of the issue and is working on a fix
by Filip Truta, September 20th, 2013
 

iOS 7 Siri Will Be Able to “Do a Lot of New Cool Stuff,” Source Says

iPhone 5S motherboard leak also includes some tidbits on the upcoming software
by Filip Truta, February 19th, 2013