Deis dev here. We've removed the Chef dependency as of v0.7.0 in favour of CoreOS and fleet for container/machine job scheduling. That ship set sail only recently in master. :)

Good riddance. Oh, and Chef is still in your website's meta tags (and therefore google results).

We'll be updating the website in preparation for our next release. Most users are still on v0.7.0 or earlier. Once it's been released then our website should reflect the changes in master.

oh good... time to have another look at Deis then :)