Reports are coming that the Galaxy S25 lineup will launch on the 23rd of January, and Samsung have added a countdown to their website:
https://www.samsung.com/nz/unpacked
They also appear to be starting the deals with a $150 discount code given for registering for the event, and a $100 voucher available to purchase for $20. Both are valid until the 14th Feb, but the $150 discount code drops to $100 of not used by the 27th of Jan.