Now that the Skywalker series is finally over, Disney is now free to explore newer settings in the SW franchise and the High Republic takes place 200 years into the past before the events of The Phantom Mance start. It's a time where the Sith are in hiding, there is peace in the Republic, and the conflict is coming from outside the Republic from invaders called The Nile.
They are describing the Jedi as Space Texas Rangers fighting Space Vikings. This could be interesting. Future new trilogy movies, games, books/comics, TV series and toy lines for the High Republic. This is basically saying Disney, is doing a full reboot.