For any that aren't familiar with the background of this project, it came from a pitch that Snyder did for Lucasfilm for a Star Wars project completely separate from anything to do with the Skywalkers. They passed to do the sequel trilogy & the 'A SW Story' films.
He took it to Netflix & they are all in with it. Current plans are for establishing a rich & centuries old lore that will span character-based series, books, animated series & more films to come.
The basis for this first film, that's broken into 2 parts, is a story similar to Seven Samurai/Magnificent Seven, where a small village sends out a call for mercs, but this event becomes the catalyst for a galaxy-wide uprising.
I, again, cannot stress how excited I am for all this. I'm in a minority here, but I have unabashedly LOVED everything I've ever seen Snyder do.