I do not believe, that Manufaktur will become available for AMG cars.
to my understanding, they are different in-house profit centers.
AMG to enhance the brand into the sporty and lifestyle segment.
Manufaktur to enhance the product offering to the more classy and luxury segment plus getting a feed into the lifestyle, fashion and trendy world of the younger rich.
Comparing the available color schemes from Rolls Royce, like mint green and more
( Rolls Royce just announced, that the average age of their customers is only 43)
Mercedes has to offer more popular fresh colors, which seems to be adressed now from the Manufaktur color portfolio.
AMG in comparison is adressing another competition,
the Marketing world of highperformance fuel cars is getting tougher.
( just my point of view and understanding)