The voice actor for Bayonetta made a tweet suggesting that he would not give voice to the flamboyant protagonist in the future. In response to a tweet praising actress Hellena Taylor's performance in the games and saying they couldn't imagine the character without her voice, she responded: "So you might need to."
it may indicate that Hellena will not announce Bayonetta in Bayonetta 3 which would be a shame and surprising given how many of the cast makers work her voice. However, it is a touch in advance to sound the alarm too loud. After all, it could also mean he’s done after Bayonetta 3 was released and there are no more games beyond the third.
It is difficult to extrapolate exactly what everyone means, though, without some sort of clarification.
You can't blame people who are confused. Since the game was announced, we haven’t seen anything more than initial teasing. We know it’s still in development thanks to comments from both developer Platinum Games and Nintendo, but Nintendo hasn’t released any further news yet. However, it has been many, many days since the game was announced. That fans are worried despite assurances to the contrary is only natural.
Bayonetta 3 was announced at the end of 2017 for the Switch with a teaser video, and we haven't heard much since. We just have to trust that the development is actually running as smoothly as Platinum and Nintendo said it was.
It is also possible that the third game may involve a new character, or a younger Bayonetta (prequel) that may call for a recast.