I'm pretty sure Bossy Boots came out for Spring 2012, but I only purchased it last fall. And finally tried it (why do we let polish sit around forever, even though we desperately want to buy it?). It's a pistachio green, which I love, and I like the way it looks. Formula is a bit finicky, as with all white-based pastels, and it chipped more quickly than some of my other Butter London formulas, which I find is also par for the course with pastel creams.
*edit: I just saw on Twitter this morning that Butter London is doing a 3 for $30 sale on their site with code SPRING13. Shipping is separate.