It's been going around in recent months that Samsung plans to decommission the Galaxy Note line. The rumour gains traction as industry insiders leak information about the company's upcoming plans. Max Weinbach shares on Twitter the flagship lineup from Samsung that we can expect.
He mentioned the Galaxy S21 devices, including the S21, S21+, S21 FE, and S21 Ultra, as well as the Galaxy Z lineup with the Z Fold 3, Z Flip 3, and Z Fold FE. He also mentioned that three of these devices would support the S Pen, which Samsung hasn't done before as the stylus is meant to be a Note-exclusive accessory.
Ice Universe on Twitter also mentioned how there is no information about the Note 21 series' development. Of course, it might be that it's still in its very early development stages. But as GSMArena points out, the Fold 2 arrived after the Note 20, so perhaps, there's some credibility to these reports.