The Crown Tundra is 4x larger than the IOA size wise
There’s only two new regional forms in addition to the birds, Galarian Dratini and Bagon. Dratini is pink and it’s body/head wings are longer, Fairy/Dragon
The bagon’s head thing is rocky and looks like a hammer, Rock/Dragon
Dratini is exclusive to Sword, Bagon to Shield. I didn’t see the evolutions
The two unrevealed pokemon are Ebosteed and Ivorsteed. Ebosteed is Ghost/Rock and looks like a large, black stone horse with big wings
Ivorsteed is Steel/Rock and is a big white unicorn with a lance for the horn
Ebosteed is exclusive to Shield and Ivorsteed is exclusive to Sword
They both have “mounted” forms with Calyrex that fuse them to make a centaur with either a sword or a shield. Both forms work like the kyurem fusions and are Psychic/Rock
These forms both have an “Ultimax” form, which is a G-Max form that changes the user’s stats and lasts the entire battle (think eternamax)
Other new gmax forms are being added for Dragapult, Jynx, Eldegoss, and Jigglypuff (the last one being an event distribution for those who bought the expansion pass)
There will be two more mythicals added via future events. There will also be mythical and legendary distributions throughout next year (i was told one of them is Shiny Victini)
GF’s plan is to make SWSH’s lifespan last until fall 2021 before a new game launches