At first blush it would seem all Apple has done is remove monitors from their offerings that may or may not be their highest sellers in their monitor lineup. Certainly the 27" inch iMac is one of their biggest sellers amongst both the general consumer and amateur visual creative people so it stands to reason that a stand-alone 27" inch monitor would also sell well.
As I've said many times both publicly and privately, no visual-creative professional worth their salt would want - or need - a glossy screen throwing back reflections at them and creating annoying and often times impossible-to-remove glare which occludes the very details we're trying to look at during our work. Anyone who's been forced to move their head around or, reposition a glossy-screened monitor to try and avoid this issue knows of the headaches this "pretty" type of screen creates. And by the way, sometimes the headaches are literal, caused by eyestrain in dealing with these glaring reflections.
So thanks, Apple, for once again proving that "Beauty is more important than functionality.", and that if the device doesn't look like an iPhone, you won't make it.
If you're a creative pro then don't waste your money on Apple's "I wanna-be an iPhone when I grow up" monitor and get a Dell or Samsung instead.