"Fedora 11 Leonidas" vs. "Fedora release 11 (Leonidas)"

[Wolfgang S. Rupprecht]

On the smolt OS stats page it has two categories for F11, namely "Fedora
11 Leonidas" and "Fedora release 11 (Leonidas)".  What is the
distinction between the two?

            http://smolt.fedoraproject.org/static/stats/stats.html
                        (click on the "OS" tab.)

-wolfgang
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Wolfgang S. Rupprecht              Android 1.5 (Cupcake) and Fedora-11