There's a new Amex Offer... earn an extra 4x MRs for Walmart Grocery Purchases. 
Doc article: https://www.doctorofcredit.com/targeted-amex-offers-get-4x-bonus-membership-rewards-at-walmart-groce...
I have this on my Amex Gold card, so that will be 8x MRs for Walmart Grocery. 
It's a little confusing (to me) since the expiration is 7/31/2019, yet the enrollment deadline is 12/31/2019; the fine-print in the offer makes me think this is likely an error and in any case the end of the deal is 7/31/2019 (through the end of the year would have been sweet, indeed).
Also, the 4x points are in addition to whatever your card normally earns for Walmart Grocery, so if you add the offer to a Platinum card or Everyday card your total MR earnings will be less than 8x.
Usually I see WM Grocery offers on my AU's card but not on my own, however this time I actually had the offer on my card which was a pleasant surprise.
Edited to add: The DoC article suggests that the offer will work until 12/31 as long as it's added by 7/31. That's not how I read it, but I would love to be wrong in this instance.
I checked both my ED and my gold and unfortunately i wasn’t selected for those offers. The only one i think i got was 5 dollars off for every 25 spent at superstores. I am not the biggest walmart grocery store purchaser so not the hugest deal in the world .
Fort the people who got the offer. Are there any restrictions on getting 8x with your gold card? I wonder if somebody has an Edp would they get even better return?
@mongstradamus wrote:I checked both my ED and my gold and unfortunately i wasn’t selected for those offers. The only one i think i got was 5 dollars off for every 25 spent at superstores. I am not the biggest walmart grocery store purchaser so not the hugest deal in the world .
Fort the people who got the offer. Are there any restrictions on getting 8x with your gold card? I wonder if somebody has an Edp would they get even better return?
There don't seem to be any restrictions or limits... here's the fine print:
Bummer, I don't have the offer on either of my cards. 🙁
Never heard of Wal-Mart grocery...that's a thing? Is it like a sub-site that has a only "grocery products?"
Also, the real question...are gift cards there? Wouldn't mind getting a head start on Christmas shopping for 8x points! 
@UncleB wrote:
@Anonymous wrote:Would be a sweet deal, if I had a Walmart Grocery. So even if I got the offer, I wouldn't be able to use it. once again another perk oppourtunity missed. lol
Walmart Grocery is the website, but you can do the actual pickup at your local Walmart store.
My local store happens to be a supercenter, yet orders places through the Walmart Grocery website are billed out of Bentonville, AR and code as grocery on Amex. You just pick up the order at the designated area at the side of the store. I think they have delivery as well, but I've never done that.
@Anonymous wrote:Never heard of Wal-Mart grocery...that's a thing? Is it like a sub-site that has a only "grocery products?"
Also, the real question...are gift cards there? Wouldn't mind getting a head start on Christmas shopping for 8x points!
There's also an app for Android and iOS (separate from the regular Walmart app). Some non-grocery items are available, but no gift cards or anything that would make this deal more 'interesting'.
Most important, the credit card charges are coded as 'Grocery' on Amex (and trigger BCP 6%, Gold 4x, etc.) regardless of how the local store codes (charges are out of Bentonville, AR).