As I suspected, the D5200 was next up in the DX update scenario. Not many surprises in this release, as it has a 24mp DX sensor in the traditional D5xxx body that uses a swivel LCD on the back.
One thing that will surprise the US market is this: the camera won't be available in the US until around CES (January). In other words, Nikon is launching the D5200 in markets other than the US (primarily Asia and Europe) first. No US announcement will be made until January, apparently. That's why you won't find a US press release or other information on the product on the NikonUSA product yet.
There are some other slight surprises. For example, the D5200 has been upgraded from the 11-sensor autofocus system to the 39-point system used by the D7000, and the metering sensor is the 2016-pixel version, as well. The Information Display screen has been modernized and provides quicker access to common settings. Live View now allows taking photos with the mirror remaining up at all times (except with flash). Maximum frame rate steps up to 5 fps from 4.
NEF is still recorded only in 14-bit compressed form (highlight data removal), the viewfinder is still a 95% pentamirror, and most of the rest of the camera remains unchanged. Video now supports 1080i/60/50 or 1080P/30/25/24 along with stereo sound (built-in mics or external mic). The camera uses the MC-DC2 connector for wired remote (and GPS and the WU-1a WiFi accessory; the camera also supports the Eye-Fi cards).
One new accessory that came up in this release is the WR-R10 wireless remote receiver and the WR-T10 remote transmitter. This device works with all 10-pin (requires WR-A10 WR adapter) or DC2 pin cameras (e.g. D3100, D3200, D5100, D5200, D7000, D300, D600, D700, D800, D3 series, and D4). It can be paired with a single or multiple cameras and has a radio-based communication distance of about 66 feet (20m). The remote can control Live View and Video operation on recent cameras (D4, D800, D600, D3200, and D5200), and can have a pre-programmed function button on it for some cameras, as well.
The D5200 has succumbed to fashion, and is available in three colors: black, red, and bronze. The camera won't be available until December in Asia and Europe. Meanwhile, the instant rebates were increased in the US on the D5100 effective yesterday.