Update: Snow Leopard will ship in September for $29, Apple announces.
Apple typically picks the dates (and times) in its marketing materials very carefully. And Apple’s online store is down — often a sign they are refreshing their product offerings. (Could be a Snow Leopard pre-order form, for instance.)
New versions of Mac OS X are typically very profitable for Apple, and add a lot of high-margin revenue to its results. But because Snow Leopard is expected to be a relatively minor OS X update, it’s possible Apple might charge much less for it than its typical updates.
Alternately, it’s possible that Apple will start selling the new iPhone on June 19, a Friday. But we’d previously heard July 17 as a more likely date.