I am aware that Marriott has the "new" Marriott bed at most of their properties now. Only problem is that it's not so new anymore.
Other chains have also renewed their bedding the last couple of years, and IMHO the Sofitel bed beats the Marriott hands down. I also think Hyatt's bed are better. I understand most other chains have updated their beds too.
How many years has it taken Marriott to roll out the new bed? At least 5 years? And they are not done yet. In the meantime other chains have surpassed them. They don't use the "new bedding" in their marketing anymore.