There’s been ongoing rumors and speculation that Samsung is looking to discontinue the Note range while adding the S Pen stylus to other phones. In fact, Samsung itself has now all but confirmed that the S Pen will make it to the Galaxy S21 range, but it seems the Samsung Galaxy Note 21 might still be in the works despite that.

That’s because a Samsung official speaking to Yonhap News (a South Korean news agency) on condition of anonymity, has said “We are preparing to release the Galaxy Note series next year.”
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https://www.techradar.com/news/samsung-galaxy-note-21-now-looks-a-lot-more-likely-to-exist