No, I have not heard of that offer but I am a Radisson Gold Member through an AIB Business Visa card "deal" and find the whole scheme a bit up in the air.
A gold tier member is supposedly offered discount rates, upgrades etc.. however any time I book a hotel there are actually better rates on their general website than on their member site and on check in there is no real difference.
Also I stayed in Stockholm with them in August and points still have not appeared on my card.
Check it out well before you sign up.