Update: Just upgraded my card (spg to spg luxury), I got the original offer of 100k for $5K spend in 3 months which got downgraded to 15k for $1k recently online.
I just needed to mention that I got the original offer email plus had to tell them the promotional code listed. The promotional code is only valid for those that received the invitational email. So if you got that and use that code you will be good to go, my offer expired at 10/31. I know some people who got physical mailers offering 150k and those were also private invitation mailers w/ codes with expiration date of the end of the year.
So they honored the original deal, they say the upgrade takes immediately so now just need to spend going into the holiday season now!
