Nikon has just introduced an entry-level DX replacement to the D5100; the D5200. Equipped with a 24.1 MP CMOS sensor, 5fps continuous shooting and ISO range from ISO 100-6400, this is no lightweight camera, though it's 505g body weight may belie that statement. This is a heavy-duty camera, despite its frame. It shares most of its innards with the D7000. With a 39 point AF-system this camera will shoot what you want, when you want it.
Though I haven't been a fan of consumer grade DSLR bodies, this one looks like it is up to the task of what most hobbyists will put it through. I've never been a big fan of "flip-out screens" always considering them a fad that isn't of much use in the field. In order to cut down on the weight of the camera, they have put all the controls in what is known to most pros disparagingly as the "idiot-dial". There is no top-view LCD so that you can see what settings you have the camera at. This means that you have to look at the viewscreen every single time to make sure that your settings are correct. This has always been a problem with the consumer grade light-weight bodies.
On the whole I would give this camera a good mark. I'm just not happy about shooting with a camera that I have to always have my head in the viewscreen. For that I give it a 3.5 out of 5.