Halleluja! It's out there! Ddclient 3.7.0 is finally released. It's been taking a while but it has a pretty nice improvement. With the help of perlhaq ddclient can update your favorit dynamic dns provider using https. Checkout README.ssl for more information on how to use it.
There's more. Check the changelog for more details.
This release wasn't possible without the help of perlhaq and ddfisher.