From Star Wars Unity:
“Recently it was confirmed that Ahsoka Tano would be making her live action debut in the second season of The Mandalorian, and Rosario Dawson has been cast as the fan-favorite character from The Clone Wars and Rebels. If everything goes to plan, her appearance in the second season of The Mandalorian won’t be the only time we see the character in live action.
According to a source who has been 100% accurate when it comes to the Disney+ series, they are planning on spinning off Ahsoka into a live action series following Season 2 of The Mandalorian, but it’s very very early in development. It’s not known how this will connect or affect the rumored animated Rebels sequel. […]”