YouTuber Nick Robinson went out of his way to interview Brian Matt, the voice actor for Super Monkey Ball games (announcer) back in the old days and sorta, maybe hinted at SEGA working on Super Monkey Ball 3? We actually discussed Brian Matt in the past hinting at a future Super Monkey Ball announcement. According to Nick Robinson, the voice actor is under an NDA, so you can view the interview at the top where he tries to dance around questions during the interview (Starts at 7:14) with Nick trying to fill in the blanks with his thoughts.
So this confirms that the original Super Monkey Ball announcer is working with SEGA, where he has recorded one session. According to the voice actor one of the lines he remembers doing was ‘Sad Emoji’ and ‘Happy Emoji’, which makes you wonder if this is joke lines to record or will be used in the next game. A lot of the interview is speculation since the voice actor isn’t allowed to confirm what the actual game is. I will let you watch the video and make your own opinion for yourself.