Stop it with the seasons. Just use months!
But it's so much fun messing with the minds of the northern hemisphere folks.
Two things will NOT happen at MWSF.
1. Release of Leopard.
2. Announcement of shipping date.
The shipping date will be announced two weeks prior to shipping, Macs purchased in the window will be eligible for the free (plus postage and handling) upgrade to Leopard, any Macs bought before the announcement won't be eligible.
Apple won't be extending this policy out to nearly three months by announcing a date at MWSF.
I guess most of the people expecting some sort of definite announcement at MWSF are experiencing their first OSX 10.x upgrade. The last two shipping dates were announced by surprise online with little to no prior fanfare from Apple, certainly not a major show. There is also a long way to go before the OS will be ready, we still haven't seen developer builds with very few features, let alone release candidates.
Leopard won't be till March at least, with the shipping date announced 2 weeks ahead of time.