Extension of validity of biometrics information

[Ronx1]

After applying online and receiving approval to submit my passport for my visa, I received a letter which says "However if you wish to extend the validity of your permit or visa beyond the validity date indicated above, you can provide your biometric information and pay the associated fee for another ten-year validity". Does this mean that I can extend the validity of my biometrics and therefore extend the validity of the visa which has been approved for issuance? My current biometrics data expires in 5 and a half years but my passport is valid for 10 years. Thank you.