Legalfalcon has said on other posts that any update means your application is being worked on, and application being worked on is a good thing..
What is your AOR, MEP, and BIO?
If above were Sept and Oct, Khare sir the update could mean that your profile was moved to final review and you could be getting PPR request in the next 3-12 days.. If so, do let us know the good news
Could you raise a CSE or call CIC helpline? they may tell you what the update was for.