For the new Fall Magnolias, I believe it's only coming in Black Shine (which is a lightly glazed leather, same as the Black Shine used in Spring 2009, I believe). The "Black" Magnolia at SDO should refer to the same Black Shine Magnolia that's at LB and AA.
I believe Timoro is supposed to be a chocolatey brown. There are pics of it here at Treesje's website, as well as pics from a Fall preview over here. acschjenn's got pics of the Timoro Magnolia in her thread too! http://forum.purseblog.com/treesje/kitson-event-aug-1st-pics-and-info-492123.html The sixth picture down in the first post shows the Timoro Magnolia, I believe, and you can ask acschjenn about colour accuracy too. The Timoro should definitely be a pretty brown brown, not a dark plum!