You can vote for this feature here: http://digitalocean.uservoice.com/forums/136585-digitalocean/suggestions/3232571-support-bsd-os-.

Kamal, do you know about any plans (or ongoing status) to adopt any of the BSDs at Digital Ocean? With all due respect, I've been to a number of these "question nodes" like this on this site, and the reply has always, and only, been what you said — go to this link and vote. On that link are two things: a high vote count (over 1700 votes) and many people asking about an official status from Digital Ocean, which has been unanswered for over a year. I've run OpenBSD 5.4 and FreeBSD 10 on a couple of other VPS providers on KVM boxes they work great; so, it would be difficult to believe that there are any technical hurdles for Digital Ocean to field such BSD boxes. There are a few people like me who are paying month to month at another provider, but will switch to Digital Ocean as soon as these VMs become available here. Please consider stating a position soon on at least one of the BSDs. Thanks for your consideration, -Rick.