Does anyone know what HS Portfolio Points are?

Does anyone know what HS Portfolio Points are? They’ve been appearing on my Statement since March 2022. I don’t recall seeing any correspondence as to what there for - or for how long the additional points will be paid. They certainly are a great earn!!

The other forums may help:
https://forums.whirlpool.net.au/archive/3l105pn1

Thanks djtech! If the reported 6 months offer is on the money (my points started to accrue in late March 2022), then it would follow that my bonus points will have ceased sometime last month. I have a Statement due on 14/10 - I guess I’ll know the outcome in a few days time. For what it is worth, I still don’t recall receiving any correspondence on the offer.