So, with Volo's just about out and the table of contents leaked, let's see how well we did!
I listed 100 monsters I would like to have seen updated. The following monsters from that list made it into VGtM:
Barghest
Beholder (I listed several subtypes, and the gauth made the cut)
Bodak
Catoblepas
Demon (again, of the subtypes I listed, the babau made it in)
Dinosaur (they included most of the subtypes I listed, which makes me very happy)
Elder Brain
Firbolg
Gnoll, Flind (I even said that their CR should be upped, which is exactly what happened)
Hag, Annis
Kobold, “Leader” (we get several types in fact)
Leucrotta
Mind Flayer (I listed the Alhoon and Ulitharid, and both are in)
Morkoth
Neogi (all three types I suggested are in)
Orc (I suggested a "High Warlord", so not sure of one of the subtypes listed will fulfill this, but it seems fairly likely)
Quickling (Woohoo!)
Satyr, Korred
Tlincalli/Manscorpion/Stinger
Triton
Vargouille
Vegepygmy
Yeth Hound
Yuan-ti, Anathema
NPCS (most types I mentioned appear to be in, even got the Archdruid by name!)
So, 25 out 100 is probably a pretty good percentage, given that the VGtM isn't a full MM2 with nothing but cover-to-cover stat blocks. Plus, most of the ones I really wanted to see made the cut; I'm only truly disappointed by gibberlings being missing, having come to terms with the fact that the gem dragons and most of the extraplanar races were likely being saved for later books. Looking back on it, I do find it odd I didn't include xvarts, given that I like them - I guess I assumed they were too obscure to be updated in the second "monster" book.