If you are a designer or concept artist then you will be glad to know that one of the most popular iOS GUI kits has been updated for iOS 7. The GUI kit comes from Teehan+Lax and it is worth noting that as the PSD kit is based on beta the team will be updating it as design elements change.
Right now the kit comes with everything you need to start wireframing your iOS 7 applications such as buttons, tabs, sliders, icons etc. The file itself sits at just over 16MB and can be downloaded for free.
Just be sure that you abide by the license:
The sole purpose of this file is to help you pitch, design and build amazing software. The file nor its elements are to be repurposed as your own. It can’t be broken apart and used to create similar tools.
This particular kit is only for the iPhone as the official iOS 7 beta for the iPad hasn’t even been released yet. If you would like to download the iPhone iOS 7 GUI kit then you can do so by clicking here.