New MeroMero? Is that a Ghost? 小鬼?

I noticed a weird kind of Mero Mero pet when I was looking for some seeds/items (I will try to explain it in the next entry). At first, I thought it was a glitch in MeroPark's system, but this one is the second one that I have seen. Perhaps MeroPar is getting ready to push the blog-pets into a new growth stage. From what I read, there has already been 'puberty' and 'adulthood', not sure what the new stage is? Anyways, this should be interesting to watch.