Mega pokemon are included, new megas will be announced.
No armored pokemon - I do not understand where this rumor came from.
New ways to travel the region. Train, flight, etc.
No leaked starters are real. 4/18.
Your rival is named like hau, you cannot name her.
Replacement for pokemon amie/refresh comes.
No demo.
Pokebank will return, but will have more features than just a box emulator.
All pokemon designs are finalized (as far as I am concerned). A few translations are not completed. A la Lizardon being Charizard etc.
I have no story details and as far as I know, these have not been leaked out.
No galar variant pokemon.
97 new pokemon, 7 exclusive to each version. 5 event pokemon planned for 2020 so far.
You can receive one starter from any previous game as an event. One per cartridge/copy of the game. Codes will just be the pokemon's name (Put in charmander to receive charmander, or piplup to receive piplup). This event will end on Jan 1st, 2020.