Samsung Galaxy S5 Pre-Orders
There is no doubt that Galaxy S5 pre-orders are planned ahead of the release. Based on the timing of previous announcements and pre-orders look for AT&T Galaxy S5 pre-orders to be among the first to start and an announcement with plenty of time between the announcement and the start.
It wouldn't be a surprise to see Verizon Galaxy S5 pre-orders announced on Twitter with a warning of a day or two before pre-orders start.
Look for Galaxy S5 pre-orders to start at a reasonable time during the day and for carriers to only take them online. This could result in an early Galaxy S5 delivery, of at least a few days.