Nah, the producer of the games outright said there wouldn't be.
Sounds like they had a pretty decent reason, though.
The way the 'sprites' work nowadays is that they need to make 3D models for each Pokemon, and doing so involves not only work into making the model itself, but coding to program it into the game, making it move, and making it interact. Because SW/SH will be on a new console, they'd have to make individual models for each and every Pokemon up to date. They can't re-use models from the 3DS games because the coding is not compatible. They'd have to start from scratch.
Doing that would take up to another year, and they don't want to have to spend all that time on it.
As for what Pokemon WILL be in SW/SH, there are a couple growing lists. I find the one on Bulbapedia to be the most accurate:
https://bulbapedia.bulbagarden.net/wiki/List_of_Pok%C3%A9mon_by_Galar_Pok%C3%A9dex_number