Hi bio teacher
the new rules around filtering of multiple convictions is not yet law, the statutory instrument is going through parliament at the moment,
keep an eye on the unlock website as when it does become law it will be posted there
so until this new law is in effect your multiple convictions will still show on a standard and enhanced DBS check even if the 11 yrs has passed.
remember that a conviction will only filter as long as you did not receive a custodial or suspended sentence, and the offence is not on the list of non filterable offences
when the new rules come into affect then yes agencies will have to run new DBS checks if required, and they will also have to update there records as under data protection they will not be allowed to keep information on offences that have now filtered under the new rules
hope that helps