My guess is the low level employee who posted this copy pasted from the announcement from last week and forgot to change the cutoff score to the new one
That's what is on the IRCC release:
Results: Rounds of invitations
No Program Specified
Number of invitations issued: 5,500
Footnote*
Rank required to be invited to apply: 5,500 or above
Date and time of round: January 18, 2023 16:13:57 UTC
CRS score of lowest-ranked candidate invited: 507
Tie-breaking rule: November 24, 2022 21:14:59 UTC
If more than one candidate has the lowest score, the cut-off is based on the date and time they submitted their Express Entry profiles.