Update to openrc-0.3.0 replaced /etc/conf.d/modules with the default one without asking. I had five modules listed there, fortunately I remembered what they were and was able to recreate the original. All the other openrc files in /etc/conf.d were left intact. The abovementioned happened on my laptop. I haven't updated my desktop machine yet, I'll do that soon (after doing backups) and see what happens.
Oh damn... I must have misread the conf.d as init.d when etc-updating... Teaches me not to do updates when dead tired... Ok, no bug here, please disregard this post.