I have just updated Galaxy S20 series circulated with the new November security patch in the major countries. Looks like it is not the only old flagship model to get it. The Galaxy Note 20 series also have received same treatment from the company. The November security patch with security improvements have delivered to the Note 20.
The Galaxy Note 20 & Note 20 Ultra gains the latest N986NKSS2HWK1 firmware version in 300MB file size. After the installation, you may feel some enhanced features in this phablet phone. The Note 20 series is not eligible for One UI 6 like Galaxy S20 series.