At first, I was slightly disappointed that the 2880x1800 would function as a 1440x900 display, which would result in losing some real estate when compared to my current hi-res @ 1680x1050.
My fears were allayed when I read this article by Anandtech on scaling and resolutions - http://www.anandtech.com/show/5996/how-the-retina-display-macbook-pro-handles-scaling - Was excited to learn that you can use different resolutions and gain even more real estate than before. You can change the resolution to function as 1920x1200 screen! Yes, this will mean slightly decreased image quality compared to default retina, but I barely notice the pixels now, so I'm sure things will look fine at that res.
My fears were allayed when I read this article by Anandtech on scaling and resolutions - http://www.anandtech.com/show/5996/how-the-retina-display-macbook-pro-handles-scaling - Was excited to learn that you can use different resolutions and gain even more real estate than before. You can change the resolution to function as 1920x1200 screen! Yes, this will mean slightly decreased image quality compared to default retina, but I barely notice the pixels now, so I'm sure things will look fine at that res.