There is an SVG available (created by the fabulous Maria Leandro)
here:
https://fedoraproject.org/wiki/File:F13-releasenotes-banner.svg
I bet that, if someone combined that template with the photo found on
slide 4 of the top banner on http://fedoraproject.org/ and updated the
release number to 14, you'd have a stupendous banner for our one page
release notes page.