Victorinox frequently releases limited edition Classic SD years, with a production run of just a year or so. This page has items released since 2010 (dates are approximate). Click pictures to enlarge.
Fern (2012/2013)
Football (American, 2012/2013)
Lobster (2010/2011)
Lobster Black (2010/2011)
Princess (????)
Scroll (2011/2012)
Soccer (2012/2013)