Colleen O'Shaughnessey has been providing the voice for Tails since 2014. She's voiced the character in numerous games over the years, but unfortunately, she won't be a part of Netflix's upcoming animated project.
Netflix announced Sonic Prime yesterday, a new animated series starring Sonic the Hedgehog. We have no idea who's going to voice Sonic in that project, but now we know for a fact that Colleen O'Shaughnessey is not behind the voice of Tails. Colleen confirmed as much on her personal Twitter account.
Fans are now worried that O'Shaughnessey is going to disappear from the role completely, just like Roger Craig Smith and Sonic. There's no official indication of that just yet, so hopefully the worry is for nothing.