After a few months of rumors, samsung made the decision that they will not release any new Galaxy Note phones in 2021. The reason is COVID-19.
Samsung CEO Koh explained to shareholders at an annual meeting, that, “It can be a lot of pressure on us to release two flagship models supporting the S-Pen within a year, so the launch of new Galaxy Note series may not happen in the second half of this year.”
He continued with, “Next year, the launch period of the Galaxy Note may be different than the past, but we are trying to continue the series. The Galaxy Note series is an important category for us.”
Samsung bringing support for the S Pen to the Galaxy S21 Ultra this year was confusing, the implementation wasn't as good as it is on a Galaxy Note phone. For the S21 Ultra, the S Pen is a separate purchase and you need a special case to bring the stylus with you unless you don't care about losing the thing. The Note series has a built-in slot for the S Pen, making it still the only phone truly designed for it.