After all, there's no guarantee that I will even like most of the MotM content, let alone decide to adopt it for my game. (I'm still warming up to artificers from Xanathar's. "Steampunk D&D, eh?" I'll ask myself, squinting at the pages. "Back in my day we didn't meddle in such tomfoolery! But the kids these days say I need to get with the times...")
Are you assuming buying the gift set, or waiting until ??? When the book is available on it's own? I'm certainly not buying two books I already own to get a compilation of two other books i own with "updates" I remain very skeptical about.
(I'm still warming up to artificers from Xanathar's. "Steampunk D&D, eh?" I'll ask myself, squinting at the pages. "Back in my day we didn't meddle in such tomfoolery! But the kids these days say I need to get with the times...")
Won't be buying the gift set nor do I expect I'll be buying the Monsters of the Multiverse book when it gets released on its own. I don't use the monsters in Volo's or Tome of Foes that often as it is, so I don't need their statblocks updated.
Frankly, the name sounds like a missed opportunities for all those books. Even with the same statblocks, having widely different takes on monsters depending on Volo's or Mordenkainen's point of views and own bias might have warranted buying the same statblocks (for a "how to use..." ideas). But as a reprint (with a few paragraphs missing), I don't see the value.
Not buying the new book, so yes, I'm keeping the old.
Oddly enough, the Volo's copy I have the spine text doesn't span the entire edge of the book, but it does so on my wife's. I suspect mine is a 1st printing, and I haven't bothered to check if they fixed/changed anything else in my wife's copy (hers was bought around Thanksgiving).
That has been their usual policy so far, and I certainly do hope they will do it. Whatever you think of the changes, We have multiple campaigns ongoing and we should not have to modify our characters after the new book comes out.
The lore is good in Guide to Monsters and Tome of Foes. Lots of good stuff to make you think and stuff you can add to a game. The stat blocks are just secondary, anyway. There's nothing in Monsters of the Multiverse that would compel me to buy it.