Chapter 66 came out on Feb 20th, so it's a matter of time. I agree with the comments about the series progression.
Monster Musume was great and enjoyable in the beginning, and it helped bring monster girls out of the underground.
But when you look at some of its contemporaries (Elf-san wa Yaserenai and Ishuzoku Reviewers to name a few), MonMusu has been floundering about for a while.
I've stuck with the series for the world-building and its interesting takes on monster girl species, and have been let down by it falling into harem antics.
Would be nice if Okayado introduced some conflict or intrigue into the series again