Denise Crosby says Tasha will be in S3. My guess is as some kind of hologram on the ED saucer.
https://twitter.com/trekmovie/status/1562877104605147136?s=21&t=oqYXJmEdEsef_hOtKwn1bQ
https://twitter.com/trekmovie/status/1562877104605147136?s=21&t=oqYXJmEdEsef_hOtKwn1bQ