Hi! Teratoscope volume 2 is in the works! The document itself is all put together; I'm just waiting on some artwork I've commissioned. Once I've got that in hand it's just a matter of doing some basic layout work and giving everything one last polish run. I've got my fingers crossed that I'll be able to release volume 2 before the Spring of 2020.
In the meantime, you can find the uncompiled run of volume 2's entries in the meantime on the Teratoscope blog (link leads to the last page of a tag that should contain all of them).