reference is Fizban from Dragonlance
Probably going to release a dracnomicon book rathercthan dragonlance since it talks about multiple settings dragons. Did gem dragons even exist in dragonlance?
You must play the game the way that we want, feeling worthless for long months before you can get fun, otherwise you wanna a "awesome button"
Oh trust me when you really get into it you feel like cunning bastards rather than worthless wretches when surviving at low level and it makes mid to high level gameplay all the more rewarding.
A Draconomicon is not 5e's style, the name for sure they won't reuse, not reusing book names is WotC policy post original core 3 books, and a book that only focuses on one creature type isn't broad enough. Plus we have the Folks of the Feywild UA too. And if a Dragon only product was coming it would have more new Dragon types then just the 5 main Gem Dragon types, there isn't even references to the extended Chromatic and Metallic Dragon Breeds, like Purple (Deep), Grey, Steel, Mitheral, Cobalt, Brown, ect...
If this was for a Dracomonicon style book with a new name, there would be stuff for Catasphy Dragons, Planar Dragons, and more obscure Dragon, instead all of it links to the already statted Gold, Sliver, Bronze, Brass, Copper, Red, Blue, Black, Green, White, Fairy Dragons, and the upcoming Sapphire, Crystal, Amathyst, Topaz, Emerald Dragons.
Gem Dragon stats would take up as much space as Metallic Dragons in a Beastairy, that is it, and Draconic subclass UA, Feywild Folk UA, and this UA combined take up less room then the player's options section of E: RftLW.
So that leaves either a book where Dragons are a Chapter, Fey another Chapter, ect..., and Gem Dragons appear in its Beastairy, and Player Options appear in there own chapter, like VGTM/MTOF.
OR a Faerun World Campaign Book, which would use the massive art collection being created for AFR MtG set, that would introduce the D&D equivalent to MtG "Planeswalkers" thanks to the spell Dreams of a Blue Veil (this is where Fizban and Mordenkaiken comes in), which has a place for all the Draconic player stuff as FR has way more Dragon lore then Dragonlance even, and has more Feywild lore then any other D&D setting including a Feywild Gobliniod Kingdom invading, and is the only setting that acquires new races every edition its been in (5e already added Tortles to FR) so adding Owlfolk and Rabbitfolk would be easier with FR then other settings.
So the UAs since Tasha's, excluding the Ravenloft ones, have all referenced Forgotten Realms lore, except for Fizban's name drop, which I explained, yet almost no one is ready to entertain the possibility that the next book is a Faerun Campaign Book, despite the literal mountain of evidence for it.