Google+ has new 'red' icon recently. Good thing that a design studio lab & blog called: Bold Perspective, has launched the updated version of their Google Plus Icon Vector freebie set for you. .
You can find various sizes of Google+ icons within the set, which are 128px optimized version and the standard 16px, 32px, and 64px in .PNG format and there's .AI vector format for each variation, if you need to modify your own Google+ version.
I modified the new Google+ 'red' in 16px size as seen on Graphic Identity Blog's sidebar in 'Add Me' social list. Feel free to add me on your Google+ circle ;)
Download free Google Plus Icon Vector