Throughout the whole rebranding of the site, making several different cover photos for various different social media sites, I realised that I did have any PSD templates for the cover photos. So I just saved these cover photo templates as .PSD’s for anyone to use. They are accurate up until the time this was posted. Or if you are just looking for the dimensions;

Facebook – 851px x 315px
Twitter – 1500px x 500px
Google+ – 927px x 523px