This gives Apple a matter of a few weeks to declare a Gold Master, produce a significant number of copies and get them to retail stores. It’s a time crunch for sure.
I don’t remember the exact timeline of things with the release of Tiger, but if memory serves me correctly Apple had atleast a month or two of pre-ordering Tiger on their site…which hasn’t been the case of Leopard. Maybe Apple will be ditching the pre-order and just surprising us one morning with Leopard being available.
Only time will tell.