This bill has received Royal Assent and is, or will soon become, law.
This is from the published bill. The Library of Parliament has also written a full legislative summary of the bill.
This enactment amends the Criminal Code , the Sex Offender Information Registration Act and the International Transfer of Offenders Act to, among other things,
(a) require compliance with the Sex Offender Information Registration Act for persons who are convicted of an offence of a sexual nature against a child and for persons who have been convicted on separate occasions of two or more offences… read more
All sorts of information on this bill is available at LEGISinfo, an excellent resource from the Library of Parliament. You can also read the full text of the bill.
Bill numbers are reused for different bills each new session. Perhaps you were looking for one of these other S-12s: