Omicron now has three sub-variants

According to Phylogenetic Assignment of Named Global Outbreak Lineages (Pangolin) that assigns lineages under 'Pango lineage' system to various viruses, including the novel coronavirus that causes Covid-19, the third outlier of Omicron was found from a sample collected from England on December 3. The new outlier of Omicron variant has been temporarily named 'England/MILK-2D24AC9/2021'.

from Times of India https://timesofindia.indiatimes.com/home/science/omicron-now-has-three-sub-variants/articleshow/88245619.cms