Source: Apple
It's been around for over 12 years, but now the 27-inch iMac is no more. Apple has removed the listing from its Mac category, leaving the 24-inch Apple Silicon-based iMac on sale. The company launched its new Mac Studio and Studio Display the other day, which it is positioning to replace that iMac instead of a rumoured new large-sized iMac. This just-discontinued model running on Intel's processor first debuted in August 2020, and it had the nano-texture anti-glare display option that the new Studio Display gets.
The iMac was first introduced in 1998, and the 27-inch model first came out in 2009. And as Apple Insider pointed out, it was the first post-Steve Jobs return product. It transitioned to the Intel processor in 2006 until it moved to the ARM-based Apple Silicon architecture in 2021.