The September 2012 issue of SD Times magazine has a feature on continuous delivery on page 37. I was lucky enough to be interviewed for the article, and it contains some information about Octopus Deploy:
Finally, in the .NET space, there’s a brand-new tool: Octopus Deploy. Launched in 2012 by a lone, London based Australian developer named Paul Stovell, Octopus is an automated deployment system designed to fill the gap between builds and delivery. “In Australia, bandwidth is limited. You use data centers, but you can only access them through remote desktop. How do you take a bunch of code and push it out to a bunch of machines without using FTP or file shares over a VPN?” he explained.
The article goes into a lot of detail about continuous delivery in general and has interviews with other tool vendors, so it's well worth a read. You can view the PDF here.