app-misc/ddcutil-0.7.2 was released on 2017-02-01. app-misc/ddcutil-0.7.3 was released on 2017-03-05. app-misc/ddcutil-0.8.0 was released on 2017-05-01. app-misc/ddcutil-0.8.1 was released on 2017-05-07. app-misc/ddcutil-0.8.2 was released on 2017-05-17. app-misc/ddcutil-0.8.4 was released on 2017-07-22. http://www.ddcutil.com/release_notes/
I have 0.8.4 in a PR already. It's being reviewed. Take note that they use flag for the api is changing names: https://github.com/gentoo/gentoo/pull/5384/commits/cd88f8ee703d450bd5b04eab39f4b0288dc79714
Sorry for the spelling mistakes, my finger is still bandaged up and it's hard to type.
Version 0.8.4 in portage now.