From rob earlier today,

>Update coming today -- starter kits scheduled to start shipping by Friday, first Soylent shipments will be next week, though probably wed/thurs rather than Monday.

- http://discourse.soylent.me/t/soylent-update-4-8/12022/95

So the first shipments should be rolling out of the dock by Apr. 24th. Still no word on speed of delivery, but I'd expect the first shipments to start arriving the week of Apr. 28th - May 3rd.