Hello! The Oxford American Dictionaries define 'spring' as 'the season after winter and before summer, in which vegetation begins to appear, in the northern hemisphere from March to May and in the southern hemisphere from September to November'. Apple's next operating system, Leopard, will be launching in the spring of 2007. What does that mean? Will it launch between 'March to May' or 'September to November'? Sorry for the stupid question but I really need to clarify this!